08/28/2010 AT 10:00 AM ET
Paris Hilton was arrested Friday night in Las Vegas for possession of a controlled substance after cocaine was found in her purse, a police spokesman says.
Hilton, 29, was arrested shortly before midnight on Las Vegas Boulevard after police pulled over a vehicle that Hilton was in. The hotel heiress was not driving.
Public Information officer Marcus Martin said the vehicle was stopped after officers believed marijuana smoke was coming out of the car in front of the Wynn Hotel, where Hilton s boyfriend, Cy Waits, operates a nightclub.
After a search of Hilton, cocaine was found in her purse, Martin said.