Lee stabbing: Parents mourn stabbed 'angel' Kevin Ssali
A woman has left a tribute to her "angel" son at the London bus stop where he was stabbed to death.
Kevin Ssali, 14, of Norwood, was attacked on Saturday night after he got off a 202 bus on Burnt Ash Road in Lee.
The note said: "Kev You're An Angel. Luv U, Mama". His father also left a note thanking people for tributes, at the stop in the south-east of the city.
A 17-year-old boy arrested on suspicion of murder remains in police custody. Two others have been bailed.
The Metropolitan Police said they had a warrant of further detention on the youth.
The other boys, both aged 15, who were also arrested on Saturday on suspicion of murder, have been bailed until a date in October.
Det Ch Insp Mark Dunne said: "I am still looking for the weapon that was used to inflict damage on this deceased young boy. We are still searching for that in the local area and I am hopeful that we may well find it."
Kevin, who was the fourth and youngest teenager to be fatally stabbed in London this year, was reported missing by his family in July.
Officers are investigating whether there had been an altercation on the bus between Kevin and a group of youths before the attack happened.
He suffered multiple stab wounds and died after being taken to hospital.
The teenager had been reported missing since July and police said the missing person's report was active when he was found with injuries.
Several of his friends left flowers and tributes for him, including messages on T-shirts which were hung on the railings close to the place where the boy fell.
In response to the tributes a handwritten note said: "Thank You All 4 va Luv 4 Kevin, Papa".
The fatal stabbing occurred a few hundred yards from the bakery where 16-year-old Jimmy Mizen was murdered in 2008, close to his family home.