An eyewitness says the attacker forced his way into the shop
Police are hunting a youth who attacked and killed a teenager working at a bakery shop in south-east London.
Jimmy Mizen, 16, suffered neck injuries in the attack at the Three Cooks Bakery on Burnt Ash Hill in Lewisham.
It is believed that the suspect became angry after being asked to leave the premises and attacked Jimmy who had tried to intervene.
Tributes have been paid to the victim, the 13th teenager to be killed in London since the start of the year.
Neighbour Catherine Busby, 87, who has known Jimmy's family for 30 years, said the youngster had planned to cut her grass on Sunday.
"He was a beautiful boy, they're a beautiful family. They're all in terrible shock," she said.
It is believed Jimmy was a pupil at St Thomas More Catholic Comprehensive in Eltham.
Victim's friend pays tribute
Al Patel, who works at Lee Pharmacy next door to the bakery, said the suspect had become aggravated after being asked to leave the shop and had smashed the window with a sign.
Mr Patel said: "It's sad, it's a real tragedy. I really feel for the parents."
'Another tragic incident'
Eyewitness Matthew Fletcher, who lives nearby, said he saw "a boy in his early twenties" smashing the shop and "kicking it through".
"He's forced his way into the shop, run behind the counter and was hitting somebody with the sign," he said.
Detective Chief Inspector Cliff Lyons, from the Metropolitan Police, said: "This is another tragic incident where a young victim has lost his life, and our sympathies are with his family and friends.
"There was an argument between Jimmy and the suspect, following which Jimmy was assaulted and he sustained serious neck injuries.
"The suspect, described as a male youth, made off from the scene up Burnt Ash Hill towards Burnt Ash Lane.
"I would urge anyone who was in and around the Burnt Ash Hill area at the time of the incident to call us at our incident room with any information they may have."