A 60-year-old man being held on suspicion of murder after the death of a Wiltshire man has been released on police bail.
Michael Walsh, 57, was found unconscious at the Rudloe community centre in Corsham on Sunday evening.
He was airlifted to Frenchay Hospital near Bristol with head injuries, but later died.
Police said results of an initial post-mortem examination were inconclusive and more tests were being carried out.
A spokesman said the suspect was released on police bail late on Tuesday night pending further inquiries.