The twins and their friend were killed in the collision

Marc and Wayne Wallace, 19, died when the car they were in hit a tree on Ballygowan Road on Saturday.

Their friend David Campbell, 18, who was driving, also died in the accident. He was buried on Tuesday.

Archdeacon Gregor McCamley said he intended to appeal to Marc and Wayne's friends to change how they drive.

"Young people think they are invincible. They bolster that up by thinking that, as it were, 'when your number's up your number's up', but they don't think it will happen to them," he said.

Archdeacon Gregor McCamley made an appeal to young drivers

"Accidents don't just happen, they are caused."

Reverend McCamley's 16-year-old son was left permanently brain damaged in a road accident.

The funeral service for the twins was held in St Columba's Church on Thursday afternoon.

A total of 42 people have been killed on Northern Ireland's roads so far this year.