Police officers are under review for not reporting a vicious robbery which led to the death of an elderly Kingsbury man.

Alan Bailey, 66, suffered multiple fatal injuries when he was attacked near his home on November 27 last year.

He was taken to hospital, but his body was found three months later at his home - and a post mortem revealed he had died of his injuries.

It has since emerged that three Brent Police officers, who were on the scene when Mr Bailey was found lying in the street after the robbery, failed to report the crime.

They made "initial inquiries" on the day he was found, but did not log the incident as a crime or make further efforts to catch the attackers.

Nobody from the police visited Mr Bailey at his home in Boycroft Avenue after he was treated at Northwick Park Hospital.

Barry Gardiner, MP for Brent North, condemned the officers' actions.

He said: "This is incredibly serious. Evidence will have been lost that could have ensured a successful conviction.

"I can't imagine why officers who were aware of an assault would not have at least made the relevant report."

Mr Bailey's decomposing body was eventually discovered in his home on March 3, when an elderly couple living opposite alerted local officers.

The couple had occasionally passed notes through Mr Bailey's letterbox to check on him and became concerned when he did not reply.

The former lift engineer had become a virtual recluse in the last few years of his life, described by neighbours as a "hermit" who was rarely seen in public.

In the past, he was a regular in nearby McDonagh's Bar, but went out less and less after his mother died three years ago.

In the last months of his life he was reduced to scavenging through bins at the back of Pizza Hut, in Kingsbury Road, hunting for leftovers.

It was in the alleyway behind Pizza Hut where the attack, which led to his death, happened.

Left with serious injuries, Mr Bailey staggered towards his home before collapsing in Lewgars Avenue, just yards from his front door.

Police have now launched a murder investigation and are appealing for information to piece together Mr Bailey's movements on November 26 and 27.

They are also considering an appeal on BBC's Crimewatch in a bid to find the attackers.

The actions of the officers, two PCs and a sergeant, who were with Mr Bailey as he was put into an ambulance, are being reviewed, but they have not been suspended from duty.

Northwick Park Hospital refused to say when Mr Bailey left hospital, or whether he was discharged or left of his own accord, citing patient confidentiality. The hospital would also not reveal if it was investigating the treatment he was given.

Police have made four arrests so far, a 19-year-old man, two 14-year-old boys and a 14-year-old girl, who have all been released on bail until July, but continue to appeal for witnesses to telephone 0208 358 0200.