Hotel heiress Paris Hilton was arrested late Friday night on felony cocaine possession charges in Las Vegas, authorities said.
Cops stopped the car Hilton was in after spotting what they believed was marijuana smoke pouring out of the windows, a police spokesman told The Associated Press.
Hilton was later released Saturday morning.
A friend of Hilton's drove the car, police said.
When the car was pulled over, onlookers crowded near the scene and Hilton was initially taken into the Wynn Las Vegas resort "to keep her safe," police said.
Last week, a knife-wielding intruder broke into Hilton's home, only to have her boyfriend, Cy Waits, pull a gun on the man, a law enforcement source told the Daily News. Waits forced the intruder to drop his weapons and lay on his stomach until the police arrived.
Waits was also arrested and remained in custody pending a court appearance for a DUI charge, the AP reported.
Hilton, 29, was arrested earlier this summer in South Africa for suspected possession of marijuana, but the charges were dropped after a friend confessed the pot was hers.
A couple weeks later, Hilton was briefly detained in France for having less than a gram of pot in her purse.
In 2007, she pleaded no contest to reckless driving and spent 23 days in jail.