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Detectives investigating the murder of a pensioner are keen to trace a man seen cycling near the scene of the attack.
Malcolm Ballantyne, 72, was found dead at his house in Saltcoats, North Ayrshire, at about 1.10pm on Friday August 21.
Police want to speak to a man seen on CCTV cycling near Glebe Place and then back towards the town centre in the early hours of that day.
Detective chief inspector Gary Cunningham said: "We are looking to trace a man who was seen on CCTV cycling close to the area where the attack took place.
"He appears to be cycling on a BMX near to Glebe Place and then appears to be heading back towards the town centre at around 2.20am to 2.40am on Friday August 21.
"The man is described as white, 18-30, of medium build and between 5ft 6ins and 5ft 9ins in height.
"He was wearing a dark hooded top and dark trousers. It is possible that some parts of the bike or wheel trim are fluorescent yellow.
"It is important that we speak to this man as he may have information which could help with our ongoing inquiry into the death of Malcolm Ballantyne.
"If you think this matches your description, please get in touch. You may have seen or heard something which could be critical to our investigation.''