Police are investigating a serious sexual offence overnight in Grimsby.
Officers were called to an address between Riby Street and Orwell Street in the town at around 4am on Monday, August 3 after reports of a serious sexual offence.
The victim has been supported by specially trained officers, and police say the incident is being treated as a top priority.
The suspect is believed to be a white man aged between 19 and 23, of a stocky build with dark hair. He was wearing a grey tracksuit.
The area has now been cordoned off and neighbourhood officers are there to help anyone who may wish to speak to them.
Detective Inspector Ian Wright said: “We are in the very early stages of the investigation however numerous actions and enquiries have already been undertaken and will be continuing throughout the day.”
If you noticed the man’s description in that area around the time, contact officers by calling 101 and using incident number 163 of August 2.