Woodford party stabbing: Family 'want answers'
The brother of a teenager fatally stabbed outside a birthday party has described not knowing why he was killed as "torture".
Munashe Charles Kutyauripo, 16, known as Charlie, was fatally stabbed on 9 January at Ashton Playing Fields outside Woodford social club.
Dennis Kutyauripo said the family could not move on without answers.
The Met named Aaron Alexander Tavares-Gaiete, 16, as a suspect in the case. He has not been seen since 10 January.
The Met said Charlie left the 16-year-old girl's party at about 21:35 GMT with a boy they now believe to be Aaron.
Outside they became involved in an altercation and Charlie was stabbed in the chest.
Aaron ran away and was last seen wearing a dark hooded jacket with a yellow motif on the left sleeve and dark trousers. He was also carrying a black shoulder bag with a white Nike logo.
Described as black, 5ft 10in tall, of slim build and with facial hair he was last seen in the Stratford area.
A reward of £10,000 has been put up for information leading to his arrest.
Mr Kutyauripo described it as a "terrible situation".
He said: "It just tortures you so much as you want to move on from the situation, [but] you really can't do it because you don't really know how the whole thing occurred in the first place.
"We're just pleading with anybody, because this could have happened to anybody... and that person would want answers."
Det Ch Insp Mark Lawson said the force would offer support and confidentiality to anyone concerned about contacting the police about the murder.
He said anyone helping Aaron left themselves open to arrest.
He added: "Aaron's family are growing increasingly concerned about where he is, and I would urge Aaron to get in touch with us so we can speak to him and reassure his family."
Four people have so far been arrested and bailed in connection with the investigation.