Stephen Butt murder probe: Blackpool taxi driver traced 26 August 2013 Last updated at 10:52 Detectives investigating the suspected murder of a man after a night out in Blackpool have traced the taxi driver who drove him home. Stephen Butt, 50, collapsed outside his home on Park Lane, Preesall, after a night out with his partner and her family on 18 August. Police said they have interviewed the taxi driver and described him as a key witness. A Manchester man, 30, is still being questioned on suspicion of murder. Two women from Manchester, aged 50 and 25, arrested on suspicion of perverting the course of justice have been released on bail pending further inquiries. Police originally thought Mr Butt died from an illness but now believe he was the victim of an assault.