Police investigating Javaid Ali's murder in Crimewatch appeal Published duration 19 July 2012

image caption Mr Ali died in hospital after being stabbed in his shop in Paisley

Police investigating the murder of a Renfrewshire shopkeeper are to appeal for help in catching his killer on the BBC's Crimewatch programme.

Javaid Ali, 48, was stabbed in Sunshine Grocers, Paisley, on 15 June. He died in hospital on 29 June.

More than 60 officers are working on the inquiry and a reward of £50,000 has been offered for information leading to the arrest of the person responsible.

A new police appeal will be made on Crimewatch, on BBC 1 at 21:00.

Two weeks ago, Abbas Ali, 25, one of Mr Ali's three sons, issued a statement appealing for help.

'Trauma and hurt'

He urged anyone with information to "think of the trauma and hurt" caused to his family and contact police.

The statement read by Mr Ali said: "Our family is absolutely devastated at the loss of my father, Javaid Ali. He was a wonderful father, husband, son and friend.

"He meant so much to us and it is heartbreaking to know we will never see or speak to him again.

image caption The attack took place at the Sunshine Licensed Grocers in Paisley on 15 June

"I cannot put into words the suffering this has caused our family and it will take a long time for us to come to terms with what has happened."

Mr Ali said he could not have asked for more from his father whom he described as "an exceptionally hard worker and a great provider for our family".

"He always put our needs first and did his best to provide my brothers and I with opportunities that he did not have when he was younger," he said. More than 60 officers are working on the inquiry and have visited 700 homes and taken up to 170 statements so far.

Detectives are still trying to trace a man who was seen walking from the direction of Sunshine Grocers at about 15:00 on the day Mr Ali was attacked, and a young woman carrying Aldi shopping bags.

She was walking towards Green Road in the direction of the cycle track.

Det Ch Insp Duncan Sloan said: "As Mr Ali's son said at a press conference, Javaid was an exceptionally hard-working man who was an integral part of his community.

"I am now asking the local community to help and come forward with information to find the person responsible for his murder.