A woman was sexually assaulted by a gang of four teenagers in a north London street.

Detectives in Enfield have appealed for information after the attack took place in Mottingham Road, Edmonton, on Sunday at 9.15pm by a group of boys believed to be aged about 17.

One of the youths was believed to be carrying a knife.

Police today released descriptions of the four suspects and appealed for any witnesses to contact them.

One is described as black, who was seen wearing a black baggy jacket, a black scarf covering all of his face. He also wore black jeans and black trainers.

Another youth is described as black, wearing dark blue jeans, a black puffer jacket with his face also covered up by a black scarf.

A third suspect is thought to be of Turkish origin and wore a grey scarf covering his face, a brown jacket with a white collar.

Another teenager was described as being of unknown ethnicity and was seen wearing a black jacket.

Scotland Yard said neighbourhood officers have stepped up patrols in the area in response to the incident.

Anyone with information should contact Enfield CID on 020 8345 3311 or Crimestoppers on 0800 555 111 or at crimestoppers-uk.org.