A 15-year-old boy is due to appear in a youth court charged with murdering a teenager on his 16th birthday.
The suspect, who has not been named, was charged with the death of Derek Boateng, from Hackney in east London, who died on Wednesday from multiple knife wounds inflicted the previous day.
The 16-year-old student was taken to an east London hospital by air ambulance but died later from his injuries.
A 15-year-old boy arrested on suspicion of murder is due to appear at Highbury Corner Youth Court today, the Metropolitan Police said.
Derek was travelling on the route 393 bus near Highbury New Park in north London when he was attacked.
His older sister Gifty, 29, paid tribute to him, telling the Evening Standard: "I could not have had a better brother. He would do things for anyone and ask for nothing in return.
"He was the family handyman and could fix anything."
Posting on Twitter as @ShanFlockavelli, one of Derek's friends wrote: "I love and miss you already man! I'm so glad I got to talk and visit you before you passed away. I love you."
Another tweet read: "Just to think he didn't even get a taster of the 16 year old life. I spoke to him yesterday, be safe and enjoy it.. I just don't understand."