The woman, who is in her 20s, had got into a cab with a friend just after midnight near the Blues pub in Lowestoft. 

A man who was unknown to the pair then got in as well. 

The taxi took the group to the Volunteer pub, on London Road North, where the woman and the man got out.

They then walked towards Milton Road East where the man allegedly led the woman into an alleyway near to the junction of Arnold Street, where he raped her.

The suspect then reportedly ran down London Road North, turning into Gordon Road.

Police have arrested an 18-year-old man from Lowestoft.

He has been taken to Great Yarmouth Police Investigation Centre where he will be questioned.

A statement from the force said: "The victim is being assisted by specialist officers."

An increased police presence is expected in and around the area.

Anyone with information is being asked to speak to Suffolk Constabulary using reference: 37/19054/26.

© Eastern Daily Press