Police are appealing for possible witnesses pictured in new CCTV footage to come forward in relation to the alleged serious sexual assault of a 22-year-old deaf woman in Lincoln in 2010.
In October 2011 Lincolnshire Police released a picture (centre) of a man who may have been in the area at the time of the incident.
This took place at the back of Sippers pub in Broadgate, Lincoln, between 1.30am and 3am on December 18, 2010. This man has still not been identified.
After reviewing CCTV archives two new images of men who may know the above man have been identified (left/right).
These men are not suspects, but may be able to help the police identify the man above.
Officers are appealing for them, or anyone who knows them to get in touch as soon as possible to help them with their enquiries.
Contact DS Cunningham at Lincolnshire Police with information on 101. Alternatively, give information anonymously to independent charity Crimestoppers on 0800 555 111.