Man arrested over London gun murder

The man was arrested during a raid at a property near Clapham High Street and he is being held at a south London police station.

Billy was shot once in the chest on the doorstep of his home near Clapham North Tube station on Valentine's Day.

Scotland Yard said four other men were also arrested on suspicion of drug dealing during the pre-planned raid.

Officers from CO19, the Met's specialist firearms unit, Operation Trident and Lambeth borough were involved in the operation.

Billy, 15, died shortly after returning from school to his home in Fenwick Place, Clapham, south west London. His younger sister Elizabeth heard the fatal gunshot and saw her brother injured close to the front door.

Police said there were no signs of forced entry to the house and it is possible Billy knew his attackers. The back door was also open.

The teenager was serving a supervision order for a burglary offence and was tagged and restricted to a curfew from 7pm to 7am.

In April, on what would have been his 16th birthday, his parents Tommy and Arporn, said their lives have been "filled with sadness".

Billy was one of three teenagers shot in less than a fortnight in February, causing politicians to stage a gun crime summit.