Eugene, OR -

An inmate who told FBI agents he was "at war with the world" has been convicted a second time for attacks on other inmates at the federal prison in Yamhill County.

The Eugene Register-Guard reports 49-year-old Thomas William Cornelius was convicted Wednesday of using a razor blade to slash the throat of a handcuffed inmate at the Federal Correctional Institution at Sheridan.

Authorities said Cornelius was angered because inmate Kevin Schultz hadn't delivered a letter to a female prisoner on his behalf.

Court documents say that after the attack, Cornelius told the FBI agents he hoped for a death sentence.

In April Cornelius was convicted of stabbing and clubbing Randy Mainwaring, a former Eugene banker serving time for fraud and identity theft.