MANCHESTER, N.H. – Prosecutors have upped the charges to first-degree murder against a man captured in Florida 15 months after his parents were found strangled in their burning New Hampshire home.

Matthew Dion of Manchester had been scheduled to appear in court Friday to hear prosecutors detail the evidence against him, but waived the hearing. He was originally charged with two counts of second-degree murder.

The 39-year-old Dion jailed without bail. Prosecutors say he beat his parents and strangled them with a wire in March 2014 in their home, then set the house on fire several days later.

He’s also charged with arson and child pornography.

Dion was placed on the U.S. Marshals Service’s 15 Most Wanted list in April. He was arrested June 3 at a Florida hotel.