An elderly ex-convict who tried to rob the main post office in New Orleans last month, saying he wanted to get sent back to federal prison, has been indicted by a grand jury.

Robert David Warren, 74, walked into the Loyola Avenue post office last month and handed a note to a clerk saying he wanted $100, according to the U.S. Postal Inspection Service.

“Read the instructions, I am robbing the Post Office!” the note read, according to court documents. The clerk stepped away to call the police, and Warren was taken into custody.

“I’m looking for federal time and a lot of it,” Warren told authorities, according to court records.

Asked why he had attempted the Oct. 22 robbery, Warren told investigators he “could no longer maintain himself mentally and physically and that he had no other options,” according to a criminal complaint signed by U.S. Postal Inspector Christopher Stifflemire.

Warren told the inspector he “needed someone to look after his needs and that was what they did in federal prison.”

“Do you know what it is like to have an IQ of 135 and have to sleep under a bridge?” Warren asked, according to the criminal complaint.

Warren told the inspector he previously served more than 13 years in federal prison for four bank robberies he committed due in part to a “hatred for the United States government” that Warren attributed to the feds “bringing in the Cubans to south Florida in 1972.” Warren was last released from federal custody in November 2003, according to the Bureau of Prisons.

“If you don’t take me to jail, I’m going to get a weapon or make one, and I will be back to continue Act 2 to complete what I started at 8:20 a.m. this morning,” Warren told the inspector, according to the complaint. “I find it very easy to put a gun to somebody’s face.”

Warren ended the interview by saying that, if offered a plea bargain for 20 years in prison, he would take his case to trial “and get 30,” the complaint says. “They might as well give me 30 from the jump!”

The grand jury charged Warren on Thursday with assault and “attempted robbery of mail matter.”

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