Police arrested a 31-year-old man in connection with the reported rape of a Grimsby woman.
A local resident called the police after he heard a barefoot woman shouting for help at around 3.30am.
Humberside Police released CCTV images of a man they wanted to speak to as part of their investigation.
The man entered Cottees Bar at 12.40am on the night of the assault (April 14) and left 40 minutes later.
Officers stressed they are not connecting the investigation to another reported rape on nearby Railway Street.