A LIVERPOOL family today appealed for help to catch the killer of a father-of-one gunned down in front of his young son six years ago.

Peter Singleton, 26, was murdered by a masked gunman who chased him through gardens near his Wirral home before shooting him point blank three times in the head.

The car dealer was stood with his girlfriend and his then-three-year-old son in Column Road, West Kirby, about to take a trip to see his mother when the killer approached.

Mr Singleton died later that night in Arrowe Park hospital.

Yesterday, his younger sister, Gina, 28, said they could not move on while the killer was still on the loose.

Miss Singleton said: “It is six years on, but nothing has changed for us. Everyone is still devastated and because we don’t know why or who has done this, we cannot move on.

“My mum [Colette] gets worse every year at this time. We cannot understand why this would happen to our Peter. Everyone is still traumatised by it.”

Mr Singleton’s son, Connor, now eight, visits his father’s grave regularly, leaving toy cars for him.