A federal judge has ordered a new mental exam for a 21-year-old man accused of trying to set off a bomb in Chicago, after the suspect told the court he would plead guilty if authorities admit they arrested him because he's a Muslim.

U.S. District Judge Sharon Johnson Coleman on Tuesday pushed Adel Daoud's trial on terrorism charges to Sept. 30 to allow time for a second mental health evaluation.

His attorney had previously asked for a delay to the scheduled July 27 trial.

Daoud has denied that he accepted a phony car bomb from an undercover FBI agent, parked it by a downtown Chicago bar and pressed a trigger. He's also accused of trying to have that FBI agent killed following his arrest.