A former detective who spent hours with a man convicted of the firebombing of Brisbane's Whiskey Au Go Go says allegations a senior police officer was involved in the attack are "garbage".
Peter Slatter was testifying at the inquest into the deaths of 15 people who succumbed to carbon monoxide poisoning after two drums of fuel were thrown into the downstairs foyer of the Fortitude Valley nightclub and set alight about 2am on March 8, 1973.
