A 17-year-old girl who was shot dead in London on Monday evening is understood to be Tanesha Melbourne.

Friends and family spoke of their grief after news broke that the school student had been killed.

She was with friends in Chalgrove Road, Tottenham, north London, when she was murdered shortly before 9.30pm on Monday. On the same evening a 16-year-old boy was shot in Walthamstow, north-east London, and is now in a critical condition.

A woman who knew the murdered girl said the victim was "just chilling with her friends" when she was shot from a car for "no reason at all".

"The car just pulled up and just started shooting," said the 21-year-old, who did not want to be named. She said she heard the gunshots "like fireworks" from her house.