An inmate given approval by a judge to leave the Pima County jail temporarily, failed to return Wednesday.

Superior Court Judge Brenden Griffin ordered Robert Nelson, 51, be released from custody temporarily, Deputy Jesus Bañuelos, spokesman for the Pima County Sheriff’s Department, said in a news release.

He was released to his girlfriend at 7 a.m. to go to a medical appointment, but failed to return to the jail by 4 p.m., per the court order. He now is considered an escapee, Bañuelos said.

Nelson, a pre-trial defendant, was being held on charges of aggravated DUI/driving on a revoked or suspended license and a failure to appear in court for aggravated DUI in 2012, Bañuelos said.

Anyone with information about Nelson’s whereabouts should call 911 or 88-CRIME.