Australian Defence officials have revealed two RAAF fighter jets were involved in a bombing mission in Iraq that led to the deaths of Iraqi civilians.

The US-led Coalition estimates there were up to 18 casualties in the 2017 attack; however, Australian officials say that it is not possible to determine if the civilian casualties occurred as a result of the Australian air strike or a nearby Coalition airstrike.

Australia's bombing mission in the region finished at the end of 2017.