A gay activist who was found guilty of manslaughter in January has been sentenced to ten years in prison, the AP reported.

Malcolm Bruce LaVallee-Davidson, a farmer and avid gun collector, told police he accidentally killed Fred Wilson in the basement of the victim's South Portland home during an April 22, 2009 12-hour-long drug and sex fueled party that included three men.

The third man, James Pombriant, testified that LaVallee-Davidson pulled the trigger of a .44 caliber Rossi revolver pointed at Wilson's head as he participated in a sex act in the victim's basement dungeon.

“I think I killed him,” LaVallee-Davidson said after he shot Wilson in the head, Pombriant testified.

Fifty-year-old LaVallee-Davidson said he did not intend to kill his friend, explaining that he checked to ensure the gun wasn't loaded twice during the night.

Defense lawyers said it's likely Wilson, who pleaded with LaVallee-Davidson to pull the trigger, loaded the gun at some point during the night.

Prosecutors said LaVallee-Davidson was responsible for ensuring the gun was not loaded.

At his sentencing Friday, he took full responsibility for his actions and apologized to the family of Fred Wilson.

LaVallee-Davidson came to national attention last year when he testified before Maine lawmakers who were considering a gay marriage law, which was later “vetoed” by voters.