IT numbed Bolton and horrified a Britain where the club culture was just starting to be king in those Swinging Sixties.

But exactly why 19 people died at the Top Storey Club has never been discovered.

And today, 40 years on, although there were allegations of arson at the time, the authorities are no nearer finding the cause of the worst peacetime fire tragedy ever to hit the borough.

Today the BEN begins an investigation into the tragedy.

See our CLUB TRAGEDY file on the Local News left link