DETECTIVES hunting a pair of gunmen who mowed down a man in a machine gun attack have offered a £20,000 reward for information about the killers.
Labourer Dean Tully was murdered on January 25 after two men in balaclavas kicked down the front door of a flat on the Haverfield Estate, Brentford, and opened fire.
Another man in his mid-thirties was treated for gunshot wounds but later discharged and a Staffordshire bull terrier were also injured in the brutal attack.
Det Insp Bob Campany, of the Homicide and Serious Crime Command, also released these grainy CCTV images in a bid to jog people's memories.
"Clearly we've got two very dangerous men at large," he said. "This was a particularly horrific attack and we need to get these people and this weapon off the streets as soon as possible. That's why we've decided to offer this reward."
Police were called to the two-bedroom flat in Fraser House at 9.22pm and Mr Tully, who had an 11-year-old son, was pronounced dead at the scene.
Officers believe the suspects, described as two black men wearing dark clothing, entered the block through a rear fire exit, burst into Flat One and sprayed the room with bullets for three minutes without saying a word.
DI Campany added: "There were nine people in the flat that night and it's really a miracle that no-one else was killed. We don't know whether Dean was deliberately targeted. It may even have been a case of mistaken identity."
The suspects were captured twice on CCTV as they entered the block of flats and later as they fled down Green Dragon Lane.
A 23-year-old man and a 37-year-old man have been arrested in connection with the investigation and are currently on bail until July 7.
Mr Tully was a Hounslow resident but had been staying at the address, which was used by various transient people, for several weeks before the shooting.
His mother said: "There must be someone out there who knows who murdered my son, please help find who killed Dean."
Police are now offering a reward of up to £20,000 for information leading to the identification, arrest and prosecution of the people responsible. Please contact the Incident Room on 020 8721 4155 or call Crimestoppers anonymously on 0800 555 111.