I.
This case arises out of a dispute which occurred in 1982 between Patricia Barry (“Barry”), an attorney representing herself in this appeal, and Gary Fowler (“Fowler”), a California Highway Patrol Officer.
Barry filed a 42 U.S.C. § 1983 action against Fowler alleging violation of her Fourth Amendment rights. 1 The district court granted Fowler’s motion for a directed verdict. 2 The court also awarded Fowler costs and attorneys’ fees. This appeal followed. We affirm in part and reverse in part.
II.
Barry’s action arises out of an incident between Barry and Fowler, which occurred when Barry called the California Highway Patrol to complain that a man had parked his car illegally on her parents’ property. While waiting for the officer to arrive, *772 Barry told a friend’s son to paste a “no trespassing” sign to the car’s windshield. When Fowler arrived to investigate the complaint, he and Barry argued. Fowler then arrested Barry for vehicle tampering and public drunkenness. The drunkenness charge was dropped before trial, but Barry was convicted by a jury of vehicle tampering.
After extensive litigation involving parties and claims not relevant to this appeal, Barry brought a 42 U.S.C. § 1983 action against Fowler. Barry maintains that Fowler violated her Fourth Amendment rights by falsely arresting her for auto tampering and public drunkenness. 3
Barry presented her case to a jury. The district court granted Fowler’s motion for directed verdict.
III.
To state a cause of action under section 1983, Barry must show that (1) Fowler acted under color of state law; and (2) Fowler deprived her of rights secured by the Constitution or federal law.
Karim-Panahi v. Los Angeles Police Dept.,
Barry maintains that her misdemeanor arrest for auto tampering violated her Fourth Amendment rights because the tampering was not done in Fowler’s presence. Under California law, an officer may make a warrantless misdemeanor arrest only if he has reasonable cause to believe that a person has committed a misdemean- or in his presence. Cal.Penal Code § 836, subd. 1 (West 1985). Relying on the expansive definition of presence under California law, the district court found Fowler was present when Barry tampered with the car. While we agree that directed verdict was proper in this case, we do not believe that Fowler’s presence when the misdemeanor was committed is relevant to Barry’s constitutional claim. 4
The Fourth Amendment protects persons against “unreasonable searches and seizures.” U.S. Const, amend. IV. The “reasonableness” and hence constitutionality of a warrantless arrest is determined by the existence of probable cause.
See, e.g., United States v. Hoyos,
Thus, the vitality of Barry’s section 1983 action is not dependent on whether Fowler was present when Barry committed the misdemeanor. Rather, the crucial inquiry is whether Fowler had probable cause to make the arrest.
See McKenzie v. Lamb,
Probable cause is generally a question for the jury.
McKenzie,
Probable cause for a warrantless arrest arises when the facts and circumstances within the officer’s knowledge are sufficient to warrant a prudent person to believe “that the suspect has committed, is committing, or is about to commit an offense.”
Michigan v. DeFillippo,
Here, the circumstances surrounding Barry’s arrest support Fowler’s determination that Barry had committed a crime. California law prohibits a person “individually or in association with one or more other persons, [from] willfully injurpng] or tamperpng] with any vehicle_” Cal.Vehicle Code § 10852 (West 1987). When Fowler arrived at the scene, Barry admitted directing a friend’s son to paste a sign to a ear’s windshield. Thus, Fowler had probable cause to arrest Barry for auto tampering.
The critical inquiry in a section 1983 action “is whether the plaintiff has been deprived of a right ‘secured by the Constitution and laws.' ”
Baker v. McCollan,
IV.
Barry also challenges the district court’s award of costs and attorneys’ fees.
A prevailing party is entitled to costs unless the court rules otherwise. Fed.R. Civ.P. 54(d). “Whether or not to award costs is a decision made by the trial judge and ‘his decision will not be overturned unless he has abused his discretion.’ ”
Trans. Container Serv. v. Sec. Forwarders, Inc.,
Awards of attorneys’ fees are also reviewed for abuse of discretion.
See Hensley v. Eckerhart,
AFFIRMED IN PART and REVERSED IN PART.
Notes
. Charlene Karr joined Barry in the district court action, but has opted out of this appeal. The only claims before us involve Barry.
. Because this was a jury trial, Fowler's motion for nonsuit pursuant to Fed.R.Civ.P. 41(b) is more properly deemed a directed verdict pursuant to Fed.R.Civ.P. 50(a).
. In certain circumstances, police officers are entitled to qualified immunity for deprivation of an individual’s civil rights.
Harlow v. Fitzgerald,
. It is well settled that an appellate court may affirm the district court on any basis fairly supported by the record.
Swenson v. United States Postal Serv.,
. Barry also alleges that Fowler lacked probable cause to arrest her for public drunkenness. We need not address this contention. Barry was arrested only once, albeit for two different crimes. We have already determined that Fowler had probable cause to arrest Barry for auto tampering. Therefore, Barry's single "seizure” was not unconstitutional, even if Fowler lacked probable cause to arrest her for public drunkenness.
