POLICE are trying to establish how a man found on the promenade at Blackpool suffered head injuries.

Jonathan George Key, aged 42, was found unconscious on the middle walk of the Promenade around 6am on Friday. He is in critical condition.

Police are anxious to contact the man who discovered Mr Key while he was walking his dog.

Detective Inspector Pat Gill says police are keeping an open mind at this stage of inquiries.