A Grantham rural fire brigade volunteer claims police are preparing to charge him over the death of his family during the floods.
Danny McGuire has been told police could charge him for driving an emergency vehicle causing death and driving an emergency vehicle while unlicensed, ABC Radio reports.
Mr McGuire lost his wife Llync, 31, eldest son Garry, 12 and daughter Jocelyn, five, when they tried to escape in a fire truck as a wall of water hit the Lockyer Valley community.
His seven-year-old son Zach survived.
The family's home was destroyed in the flood.
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A Queensland police spokesman said he could not comment.
Police Minister Neil Roberts said although he sympathised with Mr McGuire's plight, he had to let the justice process take its course.
"We really do need to wait and see what the facts and circumstances are," Mr Roberts said.
