Queensland Attorney-General Yvette D'Ath said on Friday she would ask the State Coroner to re-examine the 1973 fire.
Warwick resident O'Dempsey and Fraser Coast man Dubois were sentenced to life in jail this week for the 1974 McCulkin family murders.
Throughout both their trials, the Crown said the men killed Barbara McCulkin and her daughters, Vicki and Leanne, because they feared Mrs McCulkin could link them to the Whiskey Au Go Go fire.
"It seems that back in 1973 Barbara McCulkin knew something about who was involved in each nightclub firebombing."
Stuart died in jail in 1979 and Finch was released in 1988 after serving 15 years.
- News Regional