Tasmanian police are investigating a shooting in the Launceston suburb of Mowbray on Saturday night.

Shots were fired at a house in Crawford Street about 11pm.

Detective Jason Bolton says people were in the house at the time, but no-one was injured.

He says numerous shotgun cases were found in the street and a dark coloured four-wheel-drive was seen leaving the scene.

"There's no reason for the public to be alarmed at this stage," he said.

"Obviously there has been a number of shootings recently but the public should not be alarmed."