We granted the State’s application for discretionary review of the district court’s order suppressing methamphetamine seized by law enforcement officers from a motor vehicle. We conclude the warrant-less search of the steering column of the vehicle was supported by probable cause, and was therefore permissible under the automobile exception to the Fourth Amendment’s warrant requirement. Accordingly, we reverse the district court’s order.
I. Factual and Procedural Background.
A Polk County sheriffs deputy stopped a vehicle for speeding on Euclid Avenue in Des Moines. As the deputy approached the vehicle, Allen Allensworth rolled down the driver’s window, stated his name, and disclosed that there was an outstanding warrant for his arrest. The deputy noticed Allensworth had a large snake draped around his neck. A warrant check confirmed Allensworth had an outstanding warrant for a parole violation. The deputy arrested Allensworth, contacted Allens-worth’s friend to come to the scene and retrieve the snake, and called a towing company to transport the vehicle from the scene of the arrest. Due to the presence of the snake and the amount of traffic at the intersection where the stop occurred, the deputy decided to defer an inventory of the contents of the vehicle until after it was moved to the location where it was to be impounded. 1
*791 After transporting Allensworth to the jail for booking, but before he went to the impound lot to complete an inventory search of the vehicle, the deputy received an anonymous phone call reporting there were drugs in Allensworth’s car. Approximately two hours after the vehicle was towed and impounded, the deputy and another officer began an inventory of the vehicle’s contents. The deputy located a small bag of marijuana in the center console. Knowing the steering column was “a known place where people hide drugs,” an officer removed the horn button on the steering column and discovered a small plastic bag containing approximately twenty-five grams of methamphetamine.
Allensworth was charged with possession with intent to deliver more than five grams of methamphetamine, in violation of Iowa Code section 124.401(1) (b) (7) (2005), and failure to possess a drug tax stamp, in violation of Iowa Code section 453B.12. He filed a pro se motion to suppress the marijuana and methamphetamine, claiming they were seized in violation of the Fourth Amendment of the United States Constitution. 2 Following a hearing, the district court concluded the seizure of the vehicle, the inventory search of the console, and the resulting seizure of the marijuana did not violate Allensworth’s Fourth Amendment rights. The court suppressed the methamphetamine, however, on the ground that the search of the steering column exceeded the proper scope of an inventory search. 3
The State filed a motion requesting the district court reconsider its ruling, advancing the automobile exception to the warrant requirement as an alternative ground for upholding the search of the vehicle and seizure of the methamphetamine. The district court denied the motion, concluding the automobile exception applies only if probable cause for the search and exigent circumstances exist at the scene of the stop. The district court reasoned that the *792 automobile exception did not apply under the circumstances of this case because probable cause for a warrantless search extending beyond an inventory search did not exist at the scene of the stop in this case, but arose only later after the vehicle was impounded when marijuana was discovered in the course of the inventory search. We granted discretionary review of the district court’s suppression order.
II. Scope of Review.
We review Fourth Amendment claims de novo.
State v. Lam,
III. Discussion.
The State confines its argument on appeal to the validity of the search of the steering column under the so-called “automobile exception” to the Fourth Amendment’s warrant requirement. The State contends the district court erred in holding the automobile exception requires special exigency at the time the probable cause arises. Allensworth asserts the district court correctly suppressed the methamphetamine because the officers who conducted the search of the vehicle exceeded the limits of an inventory search when they invaded the steering column.
The Fourth Amendment of the United States Constitution ensures “the right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures .... ” U.S. Const, amend. IV. “Searches and seizures conducted by governmental officials without prior court approval are per se unreasonable unless they fall within one of the few exceptions to the Fourth Amendment’s warrant requirement.”
State v. Jackson,
A review of the evolution of the automobile exception is useful in the analysis of the issue presented in this case. The United States Supreme Court first applied the exception in
Carroll v. United States,
Forty-five years after
Carroll
was decided, the Court again addressed the scope of the automobile exception in
Chambers v. Maroney,
Rejecting Chambers’ claim that the search by the officers at the police station was unreasonable because no exigency existed to justify a warrantless search of the impounded vehicle, the Court noted:
Arguably, because of the preference for a magistrate’s judgment, only the immobilization of the car should be permitted until a search warrant is obtained; arguably, only the “lesser” intrusion is permissible until the magistrate authorizes the “greater.” But which is the “greater” and which the “lesser” intrusion is itself a debatable question and the answer may depend on a variety of circumstances. For constitutional purposes, we see no difference between on the one hand seizing and holding a car before presenting the probable cause issue to a magistrate and on the other hand carrying out an immediate search without a warrant. Given probable cause to search, either course is reasonable under the Fourth Amendment.
On the facts before us, the [vehicle] could have been searched on the spot when it was stopped since there was probable cause to search and it was a fleeting target for a search. The probable-cause factor still obtained at the station house and so did the mobility of the car unless the Fourth Amendment permits a warrantless seizure of the car and the denial of its use to anyone until a warrant is secured. In that event there is little to choose in terms of practical consequences between an immediate search without a warrant and the car’s immobilization until a warrant is obtained.
Id.
at 51-52,
In a more recent phase of the evolution of the automobile exception, the Court disavowed a “special exigency”
4
requirement for searches of readily mobile vehicles, and provided additional rationales for allowing warrantless searches of automobiles based on probable cause. In
California v. Car
*794
ney,
In
Texas v. White,
In
Michigan v. Thomas,
the justification to conduct such a war-rantless search does not vanish once the car has been immobilized; nor does it depend upon a reviewing court’s assessment of the likelihood in each particular case that the car would have been driven *795 away, or that its contents would have been tampered with, during the period required for the police to obtain a warrant.
Id.
at 261,
In
Maryland v. Dyson,
We have previously applied the “inherent exigency” rationale for warrantless probable-cause searches and seizures of readily mobile vehicles undertaken prior to the vehicle’s impoundment.
State v. Cain,
In
State v. Edgington,
Allensworth does not dispute that the marijuana discovered in the console during the inventory search and the anonymous tip received before the inventory began gave the officer probable cause to suspect the vehicle contained additional contraband. He contends, however, the officers conducting the inventory search were required, after they discovered the marijuana, to stop the inventory and request a search warrant before they could legally extend the search beyond the scope of the inventory. We disagree. Allens-worth’s Fourth Amendment challenge based on the claimed failure of the officers to comply with their departmental rules governing inventory searches is, like Edg-ington’s, without merit. The State correctly posits that whether or not the search subsequent to the discovery of the marijuana was completed in compliance with the sheriffs inventory search rules, the search of the vehicle driven by Allens-worth at the time of the stop was reasonable under the automobile exception. Probable cause for an automobile exception search “may evolve from a proper investigatory stop of a vehicle.”
Id.
at 678. We conclude it may also evolve from the discovery of contraband in the course of a proper inventory search as it did in
Edgington. Id.
at 678-79. An automobile exception search may be “as thorough as a magistrate could authorize in a warrant particularly describing the place to be searched.”
Ross,
In finding the automobile exception inapplicable in this case, the district court relied upon language in
Edgington
and
Holdemess
suggesting probable cause and exigent circumstances must arise
at the scene of the stop
to justify a later search at the station house under the automobile exception.
See Edgington,
The fact that the vehicle had been impounded and removed from the scene of the seizure before an inventory search was commenced and probable cause arose for the broader automobile exception search is of no constitutional moment. Under the substantial body of case law establishing the automobile exception, the reasonableness of the search simply cannot turn on the fortuity of whether the inventory search was commenced and contraband was discovered before or after the car was removed from the scene of the stop or seizure. When probable cause arose at the police station, the vehicle was still sufficiently mobile to render the situation exigent and the warrantless search supported by probable cause reasonable. Allens-worth’s motion to suppress is without merit and the district court erred in suppressing the methamphetamine.
IV. Conclusion.
The search of the steering column of Allensworth’s vehicle was based on probable cause that arose during a lawful inven *798 tory search. • A warrantless search of the vehicle’s steering column was therefore reasonable under the Fourth Amendment. We reverse the district court’s suppression of the methamphetamine found in the steering column and remand the case for further proceedings consistent with this opinion.
REVERSED AND REMANDED.
Notes
. The Polk County Sheriff has a motor vehicle impoundment and inventory policy. With exceptions not relevant here, the policy directs that if the driver of a vehicle is arrested, officers are to impound the vehicle and perform an inventory of its contents. The policy states the inventory is not to be used as a pretext to search for evidence, but is designed to protect the citizen’s property and the county. If illegal substances are encountered during the inventoiy, the policy directs the officer to (1) stop the inventoiy; (2) contact a super *791 visor; (3) complete the inventory; and (4) consider obtaining a search warrant authorizing "a more thorough search of the motor vehicle.”
. Allensworth claims on appeal the search also violated his rights under article I, section 8 of the Iowa Constitution, and that if we find the issue was not preserved below, we should address it on ineffective-assistance-of-counsel grounds. Allensworth did not raise below, and the district court did not rule on, a state constitutional claim. Moreover, he does not suggest on appeal that the analytical framework under the state constitution should differ from the Fourth Amendment analysis in this case.
Cf. Racing Ass’n of Cent. Iowa v. Fitzgerald,
. An inventory of the contents of an impounded vehicle pursuant to standard police procedures is reasonable if the process is aimed at securing or protecting the vehicle and its contents.
South Dakota v. Opperman,
. We use the term "special exigency” to refer to some circumstance beyond the inherent mobility of the vehicle that makes it impossible or impractical for the police to obtain a search warrant prior to the vehicle being moved away.
United States v. Graham,
. Although neither Cain nor Lam posed a challenge to a warrantless probable cause search of a vehicle after impoundment, we have upheld searches that were undertaken, at least in part, after impoundment as well.
See State v. Edgington,
. Our conclusion is guided by the overriding concern in Fourth Amendment cases that the reasonableness of the search or seizure be determined by balancing the need for the search against the individual’s privacy interest.
United States v. Knights,
