The opinion of the Court was delivered by
This appeal involves the question whether the “automobile exception” to the warrant requirement of the New Jersey Constitution requires a finding of exigent circumstances. That question has become significant because the United States Supreme Court has held that exigent circumstances are not required under the Fourth Amendment to the United States Constitution, concluding that probable cause that a vehicle contains contraband is itself sufficient justification to conduct the search without a warrant.
Pennsylvania v. Labran,
518
U.S.
938, 116
S.Ct.
2485,
Based on that conclusion and the facts of the present ease, we hold that the search of the automobile was valid because both probable cause and exigent circumstances existed. Although the police officers searched the vehicle after they had already taken defendant into custody, the vehicle was still readily mobile and third persons could have removed it from the area under surveillance or removed or destroyed its contents. Accordingly, we reverse the grant of defendant’s motion to suppress and remand for trial.
*662 I.
On May 7, 1997, Officer Timothy Harmon of the Jersey City Police Department conducted surveillance of a housing complex located on Duncan Avenue in an area known for drug-trafficking. Two weeks prior to that date, the police had received information from a reliable, confidential informant that defendant was selling drugs in. that Duncan Avenue location, storing the drugs in a gray Ford Escort. Officer Harmon alone conducted the surveillance of the specific location; perimeter teams of other officers were in the area in the event their assistance was needed.
During his surveillance, Officer Harmon observed defendant in a parking lot working on what appeared to be the radio speakers within the Ford Escort. An alleged buyer approached defendant and gave him money. Defendant walked to a nearby white Hyundai, took a plastic bag from the Hyundai’s passenger side, and gave the bag to the alleged buyer. The officer stated that the “bag was consistent with keeping of [controlled dangerous substances].” Based on his first-hand observations, experience with narcotics arrests in the area, and the informant’s tip, the officer concluded that defendant was engaged in a drug transaction.
After that first buyer walked away, a second man (unnamed in the record) approached and appeared to be talking to defendant at the Escort. Approximately one hour later, a third man, Bryan Miles, approached. The officer testified that Miles “was known to [the police] from previous arrests.” Defendant, Miles, and the unnamed man walked over to the Hyundai. Defendant handed a white object to the unnamed man, who then left. Defendant retrieved another plastic bag from the Hyundai and placed it under the passenger seat of the Escort. Defendant and Miles then drove away in the Hyundai.
Officer Harmon notified the other officers, who followed defendant and pulled the Hyundai over. The officers informed defendant that there was an unrelated, outstanding warrant for his arrest. At the same time, the officers removed Miles from the car and detained him for an unspecified time. The officers also *663 questioned defendant about his knowledge of the gray Ford Escort. Defendant denied any knowledge of the Escort. The officers arrested defendant, searched him, and discovered the keys to the Escort. Defendant continued to deny knowledge of that car.
Officer Harmon continued surveillance of the Escort. After arresting defendant, the other officers returned to the scene with the keys found on defendant. They searched the car and recovered illegal drugs. Officer Harmon did not participate in the search of the Escort because, he stated, “[n]ormally if you have a surveillance spot, you don’t ... give up your location.”
Defendant was indicted for possession of cocaine and heroin pursuant to N.J.S.A 2C:35-10a(l), possession of cocaine, heroin, and marijuana with intent to distribute pursuant to N.J.S.A 2C:35-5a(l), —5b(3), -5b(12), and possession of cocaine, heroin, and marijuana with intent to distribute within 1000 feet of school property pursuant to N.J.S.A. 2C:35-7.
The trial court granted defendant’s motion to suppress all evidence seized from the search of the Ford Escort. On reconsideration, the trial court affirmed its ruling. The court concluded that the automobile exception did not apply because the police had no exigent circumstances justifying a search without a warrant. The court believed that the Escort was not “readily mobile” because the police had arrested defendant and had him in custody, the police had defendant’s keys to the Escort, and the car was under police surveillance until the time of the search.
In an unpublished decision, the Appellate Division affirmed substantially for the same reasons expressed by the trial court. The Appellate Division added that the police received no specific information that any other person might attempt to take the vehicle or any of its contents; thus, the panel found an absence of exigent circumstances. We granted both the State’s motion for leave to appeal, 161
N.J.
332,
II.
A.
Article 1, paragraph 7 of the New Jersey Constitution provides:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated; and no warrant shall issue except upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched and the papers and things to be seized.
A warrantless search is presumed invalid unless it falls within one of the recognized exceptions to the warrant requirement.
State v. Alston,
88
N.J.
211, 230,
In this case, the State argues that the warrantless search of the Escort was valid under the automobile exception. Defendant argues that there were no exigent circumstances to permit a warrantless search. In defining the scope of the automobile exception, we turn first to federal Fourth Amendment decisions.
The United States Supreme Court first articulated the automobile exception in
Carroll v. United States,
267
U.S.
132, 45
S.Ct.
280, 69
L.Ed.
543 (1925). Generally, the automobile exception permits warrantless searches of readily movable vehicles if law enforcement officers have probable cause to believe the vehicle contains evidence of a crime.
Alston, supra,
88
N.J.
at 230-31,
The early federal cases focused on the inherent mobility of automobiles, which created exigent or emergent circumstances making it impracticable to obtain a warrant.
See, e.g., Chambers v. Maroney,
399
U.S.
42, 52, 90
S.Ct.
1975, 1981, 26 L.Ed,2d 419, 429 (1970);
Cooper v. California,
386
U.S.
58, 59, 87
S.Ct.
788, 789,
More recently, the Supreme Court has held that “[i]f a car is readily mobile and probable cause exists to believe it contains contraband, the Fourth Amendment ... permits police to search the vehicle without more.” Pennsylvania v. Labron, supra, 518 U.S. at 940, 116 S.Ct. at 2487, 135 L.Ed.2d at 1036 (citing California v. Carney, supra, 471 U.S. at 393, 105 S.Ct. at 2070, 85 L.Ed.2d at 414). In a subsequent case, Maryland v. Dyson, 527 U.S. 465,-, 119 S.Ct. 2013, 2014, 144 L.Ed.2d 442, 445 (1999), the Court confirmed that “under [the Court’s] established precedent, the ‘automobile exception’ has no separate exigency requirement.”
In Labron, the Supreme Court addressed two appeals from the Pennsylvania Supreme Court. In the first case, the police observed the defendant engaging in drug transactions; apparently, the drugs were obtained from the trunk of a car. The police *666 arrested the suspect and searched the trunk. The search revealed bags of cocaine. The Pennsylvania Supreme Court held that the evidence should be suppressed because there were no exigent circumstances to justify the search without a warrant.
In the second case, the police conducted a search of a farmhouse and a truck after an undercover informant agreed to buy drugs from the defendant. The search of the truck revealed cocaine. Again, the Pennsylvania Supreme Court suppressed the evidence because it found that there were no exigent circumstances to justify a warrantless search. Labron, supra, 518 U.S. at 940, 116 S.Ct. at 2487, 135 L.Ed.2d at 1036.
In both Pennsylvania appeals, the United States Supreme Court rejected the conclusion of that state’s highest court that “the rule permitting warrantless searches of automobiles is limited to cases where ‘unforeseen circumstances involving the search of an automobile [are] coupled with the presence of probable cause.’ ”
Id.
at 940, 116
S.Ct.
at 2487, 135
L.Ed.2d
at 1035. Instead, the Supreme Court upheld both searches solely because they were supported by probable cause.
Id.
at 940, 116
S.Ct.
at 2487,
B.
In view of those recent federal holdings, we must decide whether the automobile exception requires a finding of exigent circumstances under the New Jersey Constitution. We note that on more than one occasion this Court has interpreted our State Constitution as affording its citizens greater protections than those afforded by its federal counterpart.
State v. Pierce,
136
N.J.
184, 209,
The State asks that we adopt a rationale for the automobile exception, similar to one adopted by the federal courts under the Fourth Amendment, based solely on the lesser expectation of privacy in automobiles. Further, the State argues that, under Labron, this Court should dispose of the requirement of exigent circumstances altogether and find that probable cause alone is sufficient for a warrantless search of an automobile.
In New Jersey, it is well-settled that the automobile exception
permits police to stop and search a moving or readily movable vehicle when there is probable cause to believe the vehicle contains criminally related objects. The rationale for this exception is grounded in the exigent circumstances created by the inherent mobility of vehicles and the somewhat lessened expectation of privacy in one’s vehicle.
[State v. Patino, 83 N.J. 1, 9,414 A.2d 1327 (1980).]
In essence, “[t]he justification to conduct a warrantless automobile search ... turns on the circumstances that make it impracticable to obtain a warrant when the police have probable cause to search the car.”
Colvin, supra,
123
N.J.
at 437,
This Court has repeatedly looked to exigent circumstances to justify warrantless automobile searches.
Colvin, supra,
123
N.J.
at 429,
In prior cases, such as
Alston, Martin,
and
LaPorte,
we held that the warrantless automobile searches were reasonable only because they were supported by probable cause and exigent or emergent circumstances. In
Alston,
the officers followed a speeding ear. 88
N.J.
at 216,
In
Martin,
the police were investigating a “freshly-committed” armed robbery. 87
N.J.
at 563,
*669 Finding exigent circumstances, we upheld the warrantless search in Martin, stating:
The occupants of the ear, the suspected robbers, were still at large. Because the police had stopped the ear, the occupants were alerted that they might have been suspected of involvement in the armed robbery. They might have returned at any moment to move the car or remove the car’s contents. In addition, the officers had reason to believe that the occupants of the station wagon were not only alerted but also armed and dangerous. The illumination in the parking lot where the vehicle was discovered at that early morning hour was dim at best. In view of the possibility of the suspects’ return to the car, “[a] careful search at that point was impractical and perhaps not safe for the officers____”
[Id. at 569-70,436 A.2d 96 (citations omitted).]
We also noted that the vehicle was suspected to be an instrumentality in a freshly-committed armed robbery and that the circumstances furnishing the officers with probable cause arose spontaneously. Accordingly, we concluded “[t]here was an urgent, immediate need for the police to ascertain whether the car contained evidence of the armed robbery, before the suspects had an opportunity to leave the area or to destroy or dispose of other evidence.”
Id.
at 570,
Likewise, in
LaPorte,
we focused on the practicality of obtaining a search warrant. The Belleville police were notified of a robbery by a man with a briefcase who was also carrying a .38 caliber revolver. 62
N.J.
at 315,
*670
In
LaPorte,
we held that “[t]he police had the right to seize defendant’s automobile since it had been reported as an instrumentality used in the robbery.”
Id.
at 316,
In view of our unwavering precedent and the important rights at stake, we see no need to modify our jurisprudence. Stated differently, the State has provided no compelling basis for us to curtail or eliminate those standards that for decades have served the criminal justice system, and served it well, balancing constitutional guarantees against the need for effective law enforcement. Although federal decisional law may serve to guide us in our resolution of New Jersey issues, “we bear ultimate responsibility for the safe passage of our ship.”
Hempele, supra,
120
N.J.
at 196,
Similarly, although we have previously acknowledged that there is a lesser expectation of privacy in one’s automobile,
Colvin, supra,
123
N.J.
at 433,
We emphasize that there is a constitutional preference for a warrant, issued by a neutral judicial officer, supported by probable cause.
State v. Demeter,
124
N.J.
374, 381,
III.
Having set forth the standards to be used when deciding automobile-exception cases, we must now apply them to this case to determine whether the police conduct was justified. We first consider the probable cause question. “[Pjrobable cause is the minimal requirement for a constitutionally reasonable search of a readily movable vehicle____”
Alston, supra,
88
N.J.
at 231,
In this case, the trial court specifically found that the police were given information from a reliable informant that defendant was selling drugs and storing them in the Escort. The record elsewhere indicates that that information was confirmed by Officer Harmon’s first-hand observations of what he believed to be illegal drug activity.
State v. Henry,
133
N.J.
104, 110,
*672
Thus, the first prong of the automobile exception,
i.e.,
the existence of probable cause, has been established. We note that defendant seeks a hearing on that question. However, because the existing record so clearly supports a finding that the officers had probable cause to search the Ford Escort, we see no reason to remand the matter for that purpose.
See State v. Tucker,
137
N.J.
259, 272,
We next consider whether the State has met its burden in establishing that exigent circumstances existed to justify a warrantless search of the Escort, the second prong of the inquiry. Exigent circumstances have been described as “unforeseeability and spontaneity of the circumstances giving rise to probable cause, and the inherent mobility of the automobile____”
Alston, supra,
88
N.J.
at 233,
The lower courts incorrectly focused on the fact that defendant was arrested and placed in custody. This Court has previously stated that “exigent circumstances do not dissipate simply because the particular occupants of the vehicle may have been removed from the car, arrested, or otherwise restricted in their freedom of movement.”
Alston, supra,
88
N.J.
at 234,
*673
Here, the potential for removal or destruction of evidence existed because Miles, known to the police because of prior arrests, and at least two other persons observed by Officer Harmon, knew that defendant had engaged in drug transactions. Specifically, Miles was present when defendant stored the drugs in the Escort and was aware that defendant had been arrested or detained by the police. By fair inference, Miles thereby knew that the Escort might be unattended. Even if we assume that Miles was unable to return quickly to the Duncan Avenue location, the record supports a reasonable belief that other third parties (for example, the unnamed man who remained with defendant and Miles at the Escort for almost an hour until defendant and Miles drove away in the Hyundai) could have “move[d] the evidence” from the Escort.
Colvin, supra,
123
N.J.
at 435,
Similarly, we believe that the lower courts incorrectly relied on the fact that the police were in possession of a set of keys for the Escort at the time they searched it. Simply because the police were in possession of one set of keys does not logically preclude the possibility that one or more third parties had another set of keys to gain access to the Escort. That possibility is significant in a case in which a defendant repeatedly disavows ownership or knowledge of the car to be searched.
See, e.g., LaPorte, supra,
62
N.J.
at 316,
Additionally, the courts below emphasized that there was time to secure a search warrant because Officer Harmon had the Escort under surveillance. That emphasis also is misplaced. There is an urgent, immediate need to search a vehicle when there is a realistic possibility that someone may remove the vehicle or its contents.
In addition, the degree of exigency is heightened when the police are involved in an ongoing investigation of events occurring close in time to the search. In this case, events occurred rapidly: Officer Harmon observed defendant’s drug transactions and hid *674 ing place for the drugs; defendant had just been arrested and at least one third party knew of that arrest and knew that defendant kept drugs in the Escort; other third parties had knowledge of the drug sales; and the drugs were stored in a vehicle parked in an open lot in an area known for drug-trafficking. Given those facts, we are satisfied that there was a sufficient likelihood that evidence would be destroyed had the search of the vehicle not been conducted, contributing to the overall exigency of the situation.
Moreover, Officer Harmon was alone and observing the vehicle from a concealed surveillance point located in a room within the Duncan Avenue complex. The officer testified that he could not leave his post and “give up” his surveillance point to guard the car. In that regard, we have recognized that “it may be impracticable” to require police officers, while awaiting a warrant, to guard vehicles stopped on an open highway or parked on a public street.
Colvin, supra,
123
N.J.
at 435,
In
Colvin,
we had occasion to address a case factually similar to the one here. In that case, police officers were patrolling a neighborhood in a high drug-trafficking area. 123
N.J.
at 430,
We held
that when, without advance planning, police encounter a parked car, have probable cause to believe that the vehicle contains criminal contraband such as drugs, and have articulable reasons to believe that the evidence may otherwise be lost or destroyed, they may seize and search the vehicle for the contraband without the necessity of a warrant.
[Id. at 429-30,587 A.2d 1278 .]
There were a number of factors we deemed relevant to our holding: the element of surprise had been lost; the vehicle contained illicit drugs; third parties were “waiting to move the evidence”; and the police would have to guard the vehicle while awaiting a warrant.
Id.
at 434-35,
The same is true in this case. There are several factors we consider relevant to a finding of exigency: it would have been impracticable to require Officer Harmon to leave his surveillance post to stand guard over the Escort; the element of surprise was lost when defendant was arrested in the presence of Miles; third parties had knowledge of the location of the Escort and were aware that defendant stored drugs in either the Escort or Hyundai; those same parties could have attempted to remove or destroy the drugs in the time necessary to obtain the warrant; and other parties in this known drug-trafficking area could have removed the car itself. Based on those factors, we are persuaded that the State has met its burden in demonstrating the impracticability of obtaining a warrant.
That said, we note that any one of the above factors, standing alone, would be insufficient to support a finding of exigency. Rather, it is the combination of factors in this case that justify the warrantless search. As stated previously, a car parked in the home driveway of vacationing*owners, without more, does not give *676 rise to exigency. As another example, exigency would not have existed in the present case if the officer had not observed or reasonably believed that third parties were capable of destroying or removing the evidence contained in the car. We must await future cases to develop other examples.
IV.
We conclude by stating the obvious: the term “exigent circumstances” is, by design, inexact. It is incapable of precise definition because, by its nature, the term takes on form and shape depending on the facts of any given ease. We reiterate that exigency in the constitutional context amounts to “circumstances that make it impracticable to obtain a warrant when the police have probable cause to search the car.”
Colvin, supra,
123
N.J.
at 437,
V.
The judgment of the Appellate Division is reversed and the matter is remanded for trial.
For reversal and remandment — Chief Justice PORITZ, and Justices O’HERN, STEIN, COLEMAN, LONG, VERNIERO and LAVECCHIA — 7.
Opposed — None.
