Detectives have issued a CCTV image of a man they wish to speak to in relation to a sexual assault investigation.
A 22-year-old woman reports she was sexually assaulted on the night of Saturday, July 31 into the early morning of Sunday, August 1.
It is not yet clear where the alleged attack took place but she had visited the Alpine Club Lodge, in Ormskirk.
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Lancashire police is now looking for the man pictured, as he may be a potential witness.
A police spokesperson said: "Do you recognise this man? We want to speak to him as a potential witness in an investigation into a sexual assault.
"It is reported to have happened overnight into Sunday 1st August after the victim, a 22-year-old woman, had visited the Alpine Club Lodge in Ormskirk.
"It is not yet clear where the alleged attack took place.
"Detectives have been looking into the report and after viewing hours of CCTV, are now hoping to trace the man pictured.
"We want to get to the bottom of exactly what happened and this person could hold some key information.
"If this is you or you think you know who this person is, please get in contact with us as soon as possible.
"Similarly, if you think you know anything about what occurred, please speak to us.
"You can email 4037@lancashire.police.uk or can call 101 quoting incident reference 388 of August 1st.
"Alternatively, independent charity Crimestoppers can be reached on 0800 555111 or online at crimestoppers-uk.org. "
