31 December 2012 Last updated at 16:00 ET

Appeal to trace boy, 15, over Walworth teen stabbing

Dogan Ismail was stabbed at Latimer House in Walworth

Detectives are trying to trace a 15-year-old boy they want to speak to in connection with the murder of a 17-year-old in south-east London.

Dogan Ismail, from Peckham, was stabbed to death outside Latimer House in Walworth on Sunday afternoon and died at the scene.

Police said Dogan was stabbed when he and and his brother were involved in a row with up to four males.

Officers want to speak to Dawda Jallow in connection with the investigation.

A Metropolitan Police spokesman described Dawda, from Peckham in south London, as black, clean shaven with cropped hair, 5ft 5in tall, and of slight build.

A post-mortem examination was due to be held at Greenwich mortuary on Monday.

Dogan's family have been informed of his death.

'Senseless killing'

A 15-year-old boy was arrested on suspicion of murder and a woman, 39, was arrested on suspicion of perverting the course of justice.

They have both been released on bail pending further inquiries.

Det Ch Insp Matt Bonner, who is leading the investigation, said: "My thoughts go out to Dogan's family, who have been left devastated by his senseless killing.

"That it should happen at this time of year is all the more tragic.

"I would like to urge anyone with information about this incident to come forward and speak with my officers or, if they would prefer to remain anonymous, Crimestoppers."

He said there was no evidence to suggest the attack was gang-related and Dogan did not have any history of gang activity.