A man said his father, Gordon Parmenter, was shot and killed Sunday morning by a man armed with a rifle at the Salmon Arm Church of Christ in the Canadian Province of British Columbia, Global News reported.

Parmenter was a 78-year-old elder at the church and was targeted in the shooting, according to his son Dave Parmenter.

“A young man just came in in the middle of the service with an assault-style rifle and targeted one man in the church, and it was my father, and shot him,” Dave Parmenter said.

He said the shooter left the scene, but returned moments later before church members tackled him to the ground and held him until police arrived.

“[He] came back a second time and was very focused on him again and shot him another couple of times and in that exchange, he shot another man in the leg who happened to be in the way,” he said. “Myself and a few others wrestled the man to the ground and took the weapon away from him.”

Late Sunday, police confirmed that two people had been shot, one of them fatally, at the church. The second victim was airlifted to hospital in stable condition, police said.

The suspect was arrested at the scene, and police seized a rifle.

Dave Parmenter said the alleged shooter and victim were known to each other, but a motive is unclear.

He said the suspect is “very well-known to our family and was struggling with mental health issues.”