A schoolboy has been found guilty of murdering two sisters who died in a fire at their Tooting home.

The 15-year-old, who cannot be named for legal reasons, killed his ex-girlfriend Maleha Masud, 15, and her sister Nabiha, 21, last June.

The court heard the boy set fire to the house in Lessingham Avenue in revenge for Mahala ending their relationship.

The fire also injured the sisters' mother and two brothers, the Old Bailey was told.