ROCKLAND — A man serving a 35-year prison term for murder has been sentenced to another three years for making a knife in prison and allegedly attacking his cellmate in November.

A Knox County Superior Court jury this week found Timothy Mooney guilty of trafficking in prison contraband. The Bangor Daily News says his cellmate appeared to suffer minor injuries, but Mooney was not charged in the attack.

Mooney is serving time for killing his ex-girlfriend, Elizabeth Nelson-Blais, in Portland in 1998.

Mooney, who was homeless, smashed a concrete block into Nelson-Blais’ skull in a fit of anger after the couple had been drinking vodka and orange soda in a metal shack.