POLICE are investigating a serious sexual assault in Colchester.

POLICE are investigating a serious sexual assault in Colchester.

An 18-year-old woman was attacked in Williams Walk in the town centre between 2.30am and 3am on Sunday.

She had got separated from her friends during a night out and was assaulted by a man described as 24 to 27 years old, 5ft 7inc, of slim to medium build with muscular arms and short hair.