A former University of Wisconsin student hanged himself in the Dane County Jail Friday after being sentenced on charges of child pornography Thursday.

The Dane County Coroner’s office announced Monday the man identified as the hanged inmate was Rajib Mitra, 33, after initial autopsy results concluded the death was caused by self-inflicted injury.

Mitra was sentenced to six and a half years in prison Thursday, according to Dane County court records. He was tried on several counts of possession of child pornography dating back to November of 2003, as well as multiple counts of child sexploitation-videos and records.

Mitra spent eight years in federal prison after being found guilty of jamming police radio waves during the 2003 Halloween weekend when police were forced to use tear gas on rioting partygoers

The Madison Police Department was unable to control the riots because of the radio interference and traced the radio broadcast to Mitra’s residence.