OPINION
Defendant Craig Montgomery (“defendant”) appeals the district court’s denial of his motion to suppress the crack cocaine that law enforcement officers seized during a search of his person, following a traffic stop of the vehicle in which he was a passenger. Preserving his right to appeal the validity of that search, defendant pleaded guilty to one count of possession with the intent to distribute over five grams of crack cocaine in violation of 21 U.S.C. § § 841(a)(1) and (b)(l)(B)(iii). For the following reasons, we AFFIRM the district court’s denial of defendant’s suppression motion.
I. Background
At approximately 8:00 p.m. on April 16, 2002, Trooper Brian Workman (“Workman”), of the Ohio State Highway Patrol, lawfully stopped a vehicle in Scioto County, Ohio, for a speeding violation. Workman learned that the driver of the vehicle, Meyah McCrory (“McCrory”), had been operating the vehicle on a suspended license. According to Workman, the vehicle’s passengers appeared very nervous. Trooper Terry Mikesh (“Mikesh”), also of the Ohio State Highway Patrol, arrived at the scene to offer assistance. After requesting driver McCrory to exit the vehicle, Workman advised her that she had been driving on a suspended license, and placed her in the back of his patrol car. While checking the other occupants’ identifications, Mikesh, with the use of a flashlight, observed a stem, approximately one-inch long, on the driver’s floorboard near the center console. Based upon her training in and experience with the detection of narcotics, Mikesh was confident from her visual inspection that it was marijuana. Rand Simpson Jr. (“Simpson”), the right front passenger, reached for the stem, and Mikesh yelled at him to put it down. Mik-esh showed Workman the marijuana stem. As Workman testified, he was able to observe the stem, which was large and still had vegetation attached to it, from outside of the vehicle, and he believed it to be marijuana based upon his narcotics-deteetion training.
Mikesh advised the occupants that the troopers were going to search the vehicle based upon their observation of marijuana in the vehicle, and that the occupants were in “investigative custody” pending the completion of the search. Mikesh also advised them of their Miranda rights. Workman testified that, at that point, no one was under arrest. Rather, according to Workman, they were in “investigative custody” and received Miranda warnings based upon the troopers’ discovery of marijuana in the vehicle. Workman observed Jamaal Richardson (“Richardson”), the left rear passenger, shove a blue object underneath the back seat’s armrest.
The troopers ordered the occupants, including defendant, the right rear passenger, out of the vehicle. Workman and Mikesh performed “protective pat-downs for weapons,” and, with each occupant’s consent, examined the contents of his pockets. The troopers then placed the occupants in another patrol car, which had subsequently arrived at the scene, to prevent them from fleeing the scene or from standing on the dangerous roadside. *585 Upon searching the vehicle’s interior, the troopers recovered the large marijuana stem on the driver’s side, marijuana seeds, and a blue digital scale, which Richardson had hidden underneath the backseat armrest and which had residue in the form of green leafy material and white powder on it. Workman identified the white and green residue on the scale as cocaine and marijuana, respectively.
After searching the vehicle, the troopers asked defendant to exit the patrol car. Workman, with the intent of checking defendant for any narcotics or paraphernalia, again patted defendant down and then ordered him to remove his shoes. A bag containing crack cocaine lay in one of defendant’s shoes. According to Workman, defendant was then placed under custodial arrest. Mikesh advised defendant of his Miranda rights for the second time. Subsequent field and laboratory tests revealed that the large stem was, in fact, marijuana.
Defendant filed a motion to suppress the crack cocaine found in his shoe. 1 The district court held that the troopers’ search of defendant’s shoes did not violate the Fourth Amendment because it was a search incident to a lawful arrest. In particular, the court found that the troopers had arrested defendant at the time that they placed him in the back of the patrol car, and that they had probable cause to arrest defendant based upon: 1) the marijuana in plain view; 2) passenger Simpson’s attempt to conceal the marijuana from the troopers; 3) passenger Richardson’s concealment of something under the armrest; and 4) the apparent nervousness of all of the occupants.
II. Analysis
We review the district court’s legal conclusions in a suppression hearing
de novo,
and its factual findings for clear error.
United States v. Smith,
Defendant does not contest that Workman had probable cause to stop the vehicle in which defendant was a passenger for a speeding violation. Defendant also does not dispute that the troopers had probable cause to search the vehicle. In addition, the troopers were clearly justified in ordering defendant out of the vehicle pursuant to either the routine traffic stop or the lawful vehicle search.
See Maryland v. Wilson,
Under the “search-incident-to-a-lawful-arrest” exception to the warrant requirement, a law enforcement officer may conduct a full search of an arrestee’s person incident to a lawful custodial arrest.
United States v. Robinson,
The district court found that, at the time of the search of defendant’s shoes,
*587
the troopers had seized defendant within the meaning of the Fourth Amendment. A reasonable person would not have felt free to leave the scene based upon the following circumstances: 1) three patrol ears were at the scene; 2) the troopers observed marijuana in plain view in the vehicle, in which defendant was a passenger; 3) Mikesh yelled at passenger Simpson to put the marijuana stem down; 4) defendant had been ordered out of the vehicle, frisked, and placed in the back of a patrol car; 5) Mikesh read defendant his
Miranda
warnings; and 6) the troopers searched the vehicle.
See United States v.
Butler,
In any event, even if the troopers had not placed defendant in full custodial arrest before the search of his person, it is clear that they did so immediately after that search — after they discovered crack cocaine in his shoe. Mikesh testified that, after the discovery of that crack cocaine, she informed defendant that he was under arrest and, once again, advised him of his
Miranda
rights. Workman also testified that defendant was placed under arrest at that time. Thus, regardless of whether the troopers placed defendant in full custodial arrest before or immediately after the evidentiary search of his person, the seareh-ineident-to-a-lawful-arrest rule would validate that search as long as the troopers, independent of the crack cocaine seized during that search, had probable cause to arrest defendant at the time of that search. Chiefly relying upon
United States v. Di Re,
In
United States v. Di Re,
The Court held that the officers had no probable cause to arrest the defendant for committing, in the officers’ presence, the misdemeanor of knowing possession of counterfeit coupons.
Id.
at 592. The Court reasoned that only Reed was visibly in possession of the coupons, and that the officers had no evidence demonstrating the defendant’s possession of any coupons, “unless his presence in the ear warranted that inference.”
Id.
(rejecting, likewise, the contention that the officers had probable cause to arrest the defendant for a felony entailing both possession of the coupons and knowledge of their counterfeit nature). The Court then held that the defendant’s presence in the car was insufficient to imply his participation in the But-titta-Reed sale and, thus, insufficient to sustain probable cause for any felony conspiracy charge.
Id.
at 593,
[The inference] that one who accompanies a criminal to a crime rendezvous cannot be assumed to be a bystander, forceful enough in some circumstances, is farfetched when the meeting is not secretive or in a suspicious hide-out but in broad daylight, in plain sight of passersby, in a public street of a large city, and where the alleged substantive crime is one which does not necessarily involve any act visibly criminal.
Id.
(internal quotation marks omitted, and emphasis added). As the Court noted, even if the defendant had witnessed the transfer of the coupons, the counterfeit nature of those coupons would not have been readily apparent to him.
Id.
The Court underscored that, where the government informer singles out as the guilty party only an individual other than the defendant, any inference or suspicion arising from the defendant’s presence at the crime scene must disappear.
Id.
at 594,
However, in
Maryland v. Pringle,
The Supreme Court noted that, although the officers had probable cause to believe that a felony had been committed upon recovering the cocaine from the vehicle, the question is whether they had probable cause to believe that the defendant committed that crime. Id. (looking to state law to determine the substantive crime as well as the law enforcement officers’ authority to arrest). The Court first ex *590 plained the probable-cause standard as follows:
[It is a] practical, nontechnical conception that deals with the factual and practical considerations of everyday life on which reasonable and prudent men, not legal technicians, act. Probable cause is a fluid concept — turning on the assessment of probabilities in particular factual contexts — not readily, or even usefully, reduced to a neat set of legal rules. The probable-cause standard is incapable of precise definition or quantification into percentages because it deals with probabilities and depends upon the totality of the circumstances.... [Its substance] is a reasonable ground for belief of guilt, [which] ... must be particularized with respect to the person to be searched or seized.
Id.
at 799-800 (internal quotation marks and citations omitted) (noting that the test is one of objective reasonableness based upon all of the facts leading up to the search or seizure in question). The Court then found that the officers had probable cause to believe that the defendant had committed the crime of possession of a controlled substance.
Id.
at 802. The Court reasoned that the defendant was one of three men riding in the vehicle at 3:00 a.m.; there was a $763 roll of cash in the glove compartment directly in front of the defendant; there was cocaine behind the back-seat armrest that was accessible to all three men; and all three men failed to offer any information concerning the ownership of the cocaine or money.
Id.
at 800. The Court affirmed that “a car passenger ... will often be engaged in a common enterprise with the driver, and have the same interest in concealing the fruits or the evidénce of their wrongdoing.”
Id.
at 801 (factually distinguishing
Ybarra v. Illinois,
As
Pringle
teaches, the facts and circumstances within the troopers’ knowledge here afforded an adequate basis from which reasonably to infer that defendant was engaged in a common nareoties-relat-ed enterprise with the other occupants of the vehicle.
See Michigan v. De Fillippo,
For the preceding reasons, we AFFIRM the district court’s denial of defendant’s suppression motion.
Notes
. In this suppression motion, defendant also challenged the admissibility of any incriminating statements that he made to the troopers following their seizure of the crack cocaine on the ground that such admissions violated his Fifth Amendment
Miranda
rights; the district court denied this challenge. By failing to present any argument on it in his brief, defendant has abandoned this Fifth Amendment issue on appeal.
See Sommer v. Davis,
. There was no reasonable concern for officer safety so as to justify, under the
Teny
doctrine, this search of defendant’s person; indeed, Workman testified that he conducted the search solely to check defendant for narcotics or drug paraphernalia.
See Ybarra v. Illinois,
. Although neither the government nor defendant seem to challenge the district court's determination that the troopers had arrested defendant at the time that they placed him in the back of the patrol car, we have some reservations about the accuracy of this determination. It is uncertain whether the troopers’ ordering defendant out of the vehicle, frisking him, and placing him in the back of a patrol car are circumstances sufficient in themselves to escalate the detention into a custodial arrest given that the legality of the troopers' action here does not seem to hinge upon any such arrest. Rather, as discussed above, even without arresting defendant, the troopers had sufficient justification to order defendant out of the vehicle and to frisk him. Based upon the lawful vehicle search, the troopers likely had adequate justification to place defendant in the back of the patrol car both for his and the troopers' safety pending the completion of that search. There is no evidence that the troopers, at the time they placed defendant in the back of the patrol car, had drawn their weapons, handcuffed defendant, or used physical force to place him in the patrol car. Moreover, while Mikesh advised defendant of his rights under the
Miranda
doctrine, whose application requires that one be subject to a formal arrest or its
de facto
equivalent, she simply informed defendant that he was in "investigative custody" pending the completion of the vehicle search; she never told defendant that he was under arrest at that time.
See Stansbury v. California,
. As Professor Joshua Dressier aptly observed, the Supreme Court has yet to apply the search-incident-to-a-lawful-arrest rule to any context other than a full custodial arrest. Dressier argues that the twin rationales underlying this exception — evidence preservation and officer safety — do not apply or only marginally apply in the context of a noncustodial arrest or temporary detention. Understanding Criminal Procedure § 13.02 (2d ed.1997) (reasoning that the context of a custodial arrest poses a far greater danger to the officer than one of temporary detention as, in the latter situation, the suspect has less incentive to use a weapon or to destroy evidence, *588 and the officer need not transport the suspect to the police station).
. For example, the troopers had probable cause to believe that defendant knowingly and constructively possessed, whether jointly or singly, drug paraphernalia — the digital scale — , in violation of Ohio Revised Code § 2925.14, a fourth degree misdemeanor.
See
R.C. § 2925.01(K) (providing that "possession means having control over a thing or substance, but may not be inferred solely from mere access to the thing or substance through ownership or occupation of the premises upon which the thing or substance is found”);
State v. Kohi,
