FOUR men have been arrested on suspicion of murder following the fatal stabbing of teenager John Ogunjobi, police have said.

The 16-year-old, from Tulse Hill, south London, died from his injuries after being attacked on November 5.

Detectives today said they had arrested four men, aged 22, 20, 21 and 23, who have been taken into custody at south London police stations for questioning.

The teenager's death was just one of five fatal stabbings in Lawless London in the week beginning October 31.

Cops were initially called to Greenleaf Close, Tulse Hill, shortly before 11pm on the day of the attack, finding the teenager collapsed in the street with stab injuries.

Despite the efforts of paramedics he was later pronounced dead at the scene.

The teenager died in front of his devastated parents, with one witness describing his mother's screams.

Metropolitan Police officers returned to the scene a week on from the attack to appeal for any witnesses to come forward.

Officers also asked for anyone who may have captured footage or images of the incident on their mobile phone to get in contact.

Detective Chief Inspector Richard Vandenbergh said: "We believe the victim was attacked by a number of suspects and the altercation would have undoubtedly drawn the attention of those who were in the vicinity.

"Did you see or hear anything? If so, no matter how insignificant you think it may be, please call - your information could prove to be crucial."

Police earlier confirmed that a post-mortem examination found the teenager's cause of death to be a stab wound.

So far in the capital this year there have been 119 violent deaths, including two cases that are being treated as self-defence.