The father of murdered care-worker Tarquin Turner, last night made an emotional plea for help in catching the killer.

And he told of the great bond of love within the family that was helping them cope with their loss.

Speaking yards from the spot where his son was attacked as he made his way to Undercliffe Cricket Club, Trevor Turner spoke of his family's "devastation" and pleaded for information about his son's killers.

"I would urge anyone who knows anything to please, please, come forward," he said.

His plea came as detectives revealed two more teenagers had been arrested in connection with the killing.

A 17-year-old male and 14-year-old boy were arrested and released on police bail pending further inquiries.

Three 14-year-old boys have already been arrested and bailed.

Mr Turner, pictured with his daughter Zoe, told of his family's devastation at the cricket club last night as a team of police officers retraced his son's final steps to try to gather vital evidence seven days after the attack.

The 31-year-old hospital worker was killed in the grounds as he strolled towards the clubhouse for a night out, and had his mobile phone and wallet, containing just £20, stolen.

Mr Turner said the family had received more than 200 cards and around 30 bouquets of flowers, some of which hang from the cricket club's gates, from well-wishers.

"This is really hurting all of us in our family," said Mr Turner. "But in our devastation the family is pulling together.

"Our love is really strong and that has been a big help.

"Tarquin's life was very simple. He worked 11 hours a day and I often picked him up from St Catherine's hospital in Manningham where he worked.

"He had his evening meal and then he would play his music until his mother told him to turn it down and then he would go to the club.

"At 9.30pm that night he ran out for the bus and caught it to the club. The next thing I knew I was staring at his battered face in the hospital.

"We are a Christian family and I got awfully cross with God and I shouted at first but then I had to pray for God to lift Tarquin up to him.

"I knew I couldn't touch him in the hospital but I just wanted to put him in my arms and give him a great big squeeze."

Mr Turner said himself, his wife Jacqueline and Tarquin's sister, Zoe, had been boosted by a visit from the Bishop of Bradford, the Right Reverend David James.

"His visit was a great comfort to us all. He was very reassuring and he is a very good man.

"Tarquin was my friend. On a Sunday he would come into the house and say "I love you dad" and there's not many 31-year-olds who can say things like that.

"He had a special sparkle which has been lost with his death. If you imagine an iceberg, the bit above the water is all we knew about Tarquin.

"But since his death we've found out just how much he meant to people and the hidden aspects about him under the water have come out."

Mr Turner told how he had been touched by the praise given to his son by staff and patients at the hospital in St Mary's Road, Manningham, where he cared for elderly people.

Zoe, 29, said she would miss her "best friend".

"We all got on remarkably well," she said. "He was so full of fun and mischief and full of life.

"There's a huge gap been left by his loss and it's going to be a long time before we can close it."