New CCTV images show potential witnesses in a rape case in Grimsby in which a man has been arrested.
Police were called to Orwell Street in Grimsby at 4am on Sunday, August 2 after reports of a serious sexual offence.
A 24-year-old man has since been arrested on suspicion of rape and a drugs offence.
He remains in custody whilst enquiries continue.
Humberside Police would like to speak to the four men pictured on CCTV, as they could be important witnesses for the investigation.
Officers would like to stress that these men are witnesses, not suspects.
If you are one of these men, or know any of them, contact police by calling 101 and quoting incident number 163 of August 2.