Police: Nicole Said She Smoked Pot, Took Vicodin

At her arrest, Richie admitted she'd used marijuana and the painkiller, police say

Nicole Richie, arrested by the California Highway Patrol early Monday on suspicion of driving under the influence, admitted to officers that she had smoked marijuana and consumed the painkiller Vicodin, Altadena CHP Officer Todd Workman tells PEOPLE.

Richie was arrested after CHP officers responded at 12:31 a.m. Monday to two 911 callers who reported seeing a 2005 black Mercedes SUV going the wrong way on the 134 Highway, says Workman.

The Simple Life star, 25, was alone and talking on her cell phone when officers approached her car. “She told (them) she was lost, and had been following a friend,” Workman tells PEOPLE.

Richie was put through a series of field sobriety tests, which she failed. “She was not given a Breathalyzer because the officers didn’t believe she was under the influence of an alcoholic beverage,” Workman says.

Workman also says it was unclear how far Richie traveled the wrong way on the freeway, “but we don’t think it was more than a mile or two.”

Richie was booked in Glendale and “was cooperative,” said agent John Balian of the local police force, adding that her booking sheet shows she is 5’1″ and 85 lbs. (Workman says that Richie’s driver’s license puts her weight at 100 lbs., but she told the officers she weighted just 85.)

Her bail was posted at $15,000 and she was released at 7:17 a.m.

Richie was previously convicted of a DUI in L.A. in June 2003, the same year she checked into rehab after being arrested for heroin possession and driving with a revoked license.

Richie’s attorney, Howard Weitzman, issued this statement Tuesday: “This is a difficult time for Nicole but she is prepared to accept whatever responsibility is appropriate. She intends to continue with her career and will deal with any other issues that need to be addressed.”

Richie’s arraignment is set for Feb. 7 at Glendale Superior Court. No charges have been filed yet, said Glendale Deputy District Attorney Ed Greene, but he says he expects the case to be submitted to his office from the CHP in two to three weeks.