POLICE have released as description of the man they are looking for after a sexual assault on a woman in her 60s in Devizes last night.

The man is described as white, with dark spiky hair and was unshaven. He is described as slim to medium build and approximately 5 ft 6 inches tall. He was wearing a mustard yellow T-shirt.

READ MORE: Police reveal details of horrific sex attack

At around 7.55pm, the woman was walking along the canal towpath towards the canal bridge at Northgate Street when she was approached from behind by a man who sexually assaulted her.

During the incident, the woman was knocked to the floor. The man then ran off up the steps from the towpath onto Northgate Street.