OMAHA, Neb. (AP) — The Indiana man accused of killing four people with ties to an Omaha medical school has been charged with assaulting jail guards as he awaits his Nebraska trial.

A Douglas County Sheriff’s Office report says 40-year-old Anthony Garcia kicked one guard and punched another in an incident Friday. Garcia had been told to return to his cell. He objected, saying he needed more time to place a phone call to his attorneys.

Garcia, of Terre Haute, Ind., has pleaded not guilty to murder charges in the 2008 slayings of the 11-year-old son of Creighton University pathologist William Hunter and the family’s housekeeper, as well as the May deaths of Creighton pathologist Roger Brumback and his wife.

Brumback and Hunter had fired Garcia.