Police investigating the murder of a man have released CCTV of his last known sighting.

Michael Martin, aged 25, was first reported missing on Monday August 8, having last been seen at a petrol station in Bolton Road, Kearsley, at 7.30am on Sunday August 7.

Police have now launched a murder investigation and have searched two properties in Blackley, one on Victoria Avenue and one on Longton Road, as well as a room at the Premier Inn on Middleton Road, Higher Blackley.

Two men — aged 39 and 53 — have been arrested on suspicion of assault and bailed pending further enquiries.

Investigating officers are yet to find a body and are not ruling out the prospect that Michael, who has mental health issues, could still be alive.

But they are increasingly concerned as he has not been seen in two weeks and there has been no activity on his bank account in that time.

The 25-year-old’s car, a black Ford Focus, was also recovered on Velmere Avenue, Blackley, on Tuesday August 9 and the force said it had a smashed window and damaged exhaust.

Another car owned by Michael, a silver Vauxhall Corsa, was recovered earlier in the month and had also sustained damage.

Greater Manchester Police has now released CCTV footage of Michael's last known sighting and are offering a reward of £10,000 to anyone with information about what may have happened to him.

The police believe that Michael was assaulted shortly before he was reported missing.

A 39-year-old man and a 53-year-old man have been arrested and bailed pending further enquiries.

Detective Superintendent Jon Chadwick, Head of GMP’s Major Incident team, said: “We are keen to speak to anyone who may have any information about what has happened to missing Michael Martin.

“We are particularly keen to speak to anyone who may have seen Michael’s car in the two days before it was recovered.

“We are investigating a number of possibilities and are not ruling out that he is still alive; but it is now over two weeks since he was last seen.

“Michael is vulnerable due to some mental health concerns and his family are understandably desperate to find out what has happened to him.

“Our specialist support officers are supporting Michael’s family through this incredibly difficult time and my thoughts are with them.”

Anyone with any information is asked to contact police on 101 quoting incident number 1248 of 08/08/16 or via the independent charity Crimestoppers on 0800 555 111.