Air and sea search off Brisbane after unmanned boat found with motor running

An unmanned boat found with its motor still running has prompted an air and sea search of Moreton Bay.

Water police and PolAir, the Queensland Police helicopter, were searching for the owner of the tinny, which was found still running about 100 metres off Mud Island, late Wednesday afternoon.

Police were alerted about 3.30pm on Wednesday.

More to come.