Police have made a fourth arrest after a man was stabbed to death in Grove Park.

Officers were called at around 11.55pm on September 13, to a fight in a chicken shop in Downham Way.

Officers attended and found two men suffering stab and head injuries.

Both were taken to hospital by London Ambulance Service.

The first man, formally identified as 34-year-old Omar Smith from Lewisham died in hospital on September 14.

His next of kin have been informed.

A special post-mortem examination held on September 15at Greenwich Mortuary proved inconclusive and we await the results of further tests.

The second man injured, aged, 51, was released from hospital following treatment and was arrested on suspicion of GBH.

Two other men aged 40 and 46 were arrested at the scene on suspicion of GBH.

All three were further arrested on suspicion of murder and taken to south London police stations.

On September 16, a 25-year-old man was arrested on suspicion of murder. He has been taken into custody at a south London police station.

Enquiries into the full circumstances continue.

The man fatally injured was not a worker at the chicken shop.

Detectives from the Specialist Crime Command have been informed and will be investigating working closely with police in Lewisham.

Anyone who witnessed the incident is asked to call police on 101 quoting CAD 9560/Sep13.

If you have information about this incident, or information about someone you suspect to be carrying a weapon and you do not want to speak to police, please contact the independent charity Crimestoppers on 0800 555 111 or by visiting their website. It is 100 per cent anonymous. They never ask your name and cannot trace your call or IP address.

Any young people who have information about violence or knife crime can visit www.fearless.org where they can pass on information anonymously – your I.P address will not be traced. Fearless is part of the Crimestoppers charity, and is also independent of the police.