A WORRIED mum is warning parents to be careful about letting their children out.

This was after her 11-year-old daughter and two schoolfriends were subjected to a man indecently exposing himself to them.

The incident happened in the alleyway between Frinsted Road and Avenue Road, Erith, at around 6.40pm on August 1.

Less than two hours later there was another incident involving a mother and her daughter, 13, in the same area.

The man, who dropped his trousers and underpants, is white, aged about 30 and has receding dark brown hair.

He was wearing a dark T-shirt, light blue jeans, black shoes and white boxer shorts.

Anyone with information about the incidents or who the man is should call Bexley CID on 020 8284 9135.