A man police want to speak to after the murder of a shop assistant has contacts in the Redbridge area, detectives have said.

Ehsannullah Mohabat, 18, was seen leaving Halal Food Direct in The Broadway, Wood Green, shortly after Irfan Ahmad, 24, was stabbed on September 29.

Mr Mohabat is known to have gone back to his home in Enfield before disappearing.

Detectives say he has contacts in Redbridge, as well as in Haringey, Barnet, Waltham Forest and Brent and in the Gloucester, Leicester and Birmingham areas of the UK.

They are appealing to anyone who knows his whereabouts to contact them immediately.

They are also offering a �10,000 reward for information leading to the identification, arrest, and prosecution of the person responsible for the death.

Mr Ahmad, of Hanley Road, Finsbury Park, was at work when he is believed to have become involved in some sort of altercation with Mr Mohabat shortly before he died.

A post-mortem examination held the following day gave the cause of death as a stab wound to the chest.

Mr Mohabat is described as 5ft 5ins tall.

At the time of the incident he was wearing a black hooded top with red writing on the front, baggy grey trousers and black trainers.

Anyone who can help should call the incident room on 020 7321 9290 or call Crimestoppers anonymously on 0800 555 111.

There has been no arrests at present.