Further arrest over stabbed boy

Forensic officers checked Newall House after the murder on Saturday

A fifth person has been arrested over the killing of a 15-year-old who was found stabbed in a south London block of flats.

Lyle Tulloch, from Peckham, was attacked in a stairwell at Newall House, Borough, on Saturday morning.

A teenage boy, 17, was arrested on Monday and remains in custody.

Four youths - aged 15, 16, and two aged 17 - were held on Saturday. Three were released on bail and no further action will be taken against the 15-year-old.

Lyle died at the scene of the attack. He was the 12th teenager to be fatally stabbed or shot in London so far this year.

His youth worker Uanu Seshmi described Lyle as a hard-working student who wanted to be a lawyer.

"He had his contradictions, he had his troubles, but he was a good guy," Mr Seshmi said.