Jimmy is the 13th teenager to be fatally attacked in London this year
Police are continuing to question a 19-year-old man over the killing of a teenager in a bakery shop in south-east London.
Jimmy Mizen, who turned 16 a day before his death, tried to avoid a fight minutes before the attack, just 500 yards from his home in Lee on Saturday.
He died from a fatal neck injury from a shard of glass, police said.
The suspect, who was arrested on Tuesday afternoon, remains in police custody at a London police station.
Jimmy is the 13th teenager to have been fatally attacked in London since the start of the year.
Officers have until Wednesday afternoon to question the suspect before requesting an extension of custody.
The attack happened at the Three Cooks Bakery in Burnt Ash Hill on Saturday morning.
Police said Jimmy was with an older brother when an attacker challenged him to a fight outside the shop, but the teenager declined to fight.
The man then smashed glass in the store and delivered a fatal blow to Jimmy's throat, police said.
On Tuesday Scotland Yard announced it would use its stop and search powers to prevent knife crime in London, following the "horrendous events over the last 48 hours".
The decision comes after 22-year-old Steven Bigby was fatally stabbed in the chest on Oxford Street two days after Jimmy's death.
Under section 60 of the Public Order Act, police can search people without reasonable suspicion.
The first team of 15 officers will be deployed to an unnamed London borough.
London Mayor Boris Johnson said there would be a "zero tolerance" approach to crime and said there was a need to "change the mentality" of youths.