DETECTIVES investigating the alleged arson of Hervey Bay's A1 Auto are appealing for anyone who may have unfinished business with the store to come forward.
All business records were blackened in the fire which gutted A1 Auto and damaged neighbouring stores on the night of June 22.
Hervey Bay CIB Detective Sergeant Mick Polit said officers were interested in speaking with anyone who might have had documented dealings with the store.
It comes after a third person was charged over the fire.
Police allege A1Auto owner Jamie Brown orchestrated the torching of his Boat Harbour Drive store in attempt to access a lucrative insurance payout.
The 28-year-old and his brother-in-law Tsony Baker were already before the courts when Baker's cousin Noel Welch was arrested last week.
Sgt Polit said Baker and Welch had been arrested at the scene and released pending further questioning but both had since been charged with three counts of arson and one count of fraud and were due back in court next month.
Brown, who faces the same charges, along with possessing dangerous drugs, remains on bail until his next court appearance on October 2.
Anyone with information can phone Hervey Bay CIB on 4128 5366.