Five homes have been shot at in what appears to be an indiscriminate attack in the central Queensland city of Mackay.
Two homes on a street in Blacks Beach were fired on about 2am (AEST) Wednesday, and a short time later shots were fired at homes in nearby Rural View, Beaconsfield and North Mackay.
Mackay Acting Inspector Craig Sanderson says although investigations are in the initial stages, it's believed multiple weapons were used.
Links to drugs are also being investigated.
"Of major concern to us, obviously, is the indiscriminate nature of the actions of the offenders," he said.
"They were shooting the firearms towards houses, where it is unknown who is in that house, or it may not even be the house of the person that they were targeting."
"We are looking at all those things."
Ballistic analysis is underway to determine if the guns used were stolen.
No-one has been injured in any of the incidents.