LAS VEGAS — A former O.J. Simpson co-defendant who was given probation after testifying against the fallen football star has been jailed and could be sent to state prison for failing a drug test, his lawyer said Thursday.

Charles Cashmore, 41, was taken into custody on New Year's Eve and faces a hearing before the judge who let him and three other men remain free after sentencing Simpson and co-defendant Clarence "C.J." Stewart to prison.

"He violated probation," attorney Edward Miley said, citing a state Division of Parole and Probation report that he said showed Cashmore had methamphetamine in his system. "The state intends to impose the suspended sentence."

In December, Clark County District Court Judge Jackie Glass handed Cashmore a suspended one-to-three-year sentence, allowing him to remain free on three years' probation if he abided by strict behavioral rules.

A hearing before the judge had was not immediately scheduled, Miley said.

Cashmore, a journeyman laborer, was the first of four accomplices to take a plea deal in the case. He pleaded guilty in October 2007 to a reduced charge, felony accessory to robbery.

He testified that he met Simpson for the first time minutes before joining Simpson and four other men in the ill-fated hotel room confrontation with two sports memorabilia dealers in September 2007. He said two other men in the group brought guns.

That undercut Simpson's insistence that no one brought guns. Simpson said he was only trying to retrieve personal mementos and family heirlooms that had been stolen from him after his acquittal on murder charges in the 1994 slayings of his ex-wife, Nicole Brown Simpson, and her friend, Ronald Goldman, in Los Angeles.

The Las Vegas jury found Simpson and Stewart guilty Oct. 3 of all 12 charges against them, including kidnapping, armed robbery and assault with a deadly weapon.

Glass sentenced 61-year-old Simpson to nine to 33 years in state prison. Stewart, 54, was sentenced to 7 1/2 to 27 years.

Three other admitted accomplices who turned the state's evidence in the case _ Michael McClinton, Walter Alexander and Charles Ehrlich _ each pleaded guilty to felony charges and were sentenced to probation.