Aircraft waterbombing a Christmas Day bushfire in Tasmania had to be called off due to a drone flying in the area.

Key points: The drone was being controlled from Kettering Oval area, across from Bruny Island

The drone was being controlled from Kettering Oval area, across from Bruny Island Flying drones near bushfires can be an offence under the Civil Aviation Safety Authority, police said

Flying drones near bushfires can be an offence under the Civil Aviation Safety Authority, police said A fire was still active in a 120-hectare area at the island's southern end on Boxing Day

Seven helicopters with waterbombing and spraying capabilities spent much of yesterday fighting the bushfire on Bruny Island, a popular spot with holidaymakers south of Hobart.

Fires burnt through about 130 hectares on Christmas Eve and into Christmas morning, with about 150 people evacuated from the southern end of the island.

During the early hours of Christmas morning conditions worsened with strong winds pushing the fire in an easterly direction towards Prices Lookout, the Tasmania Fire Service said in a statement.

The Shevlin family were evacuated from their campsite at Bruny Island by the Christmas Eve fire. ( Supplied: Shevlin family )

This house and a number of other buildings were lost, but thankfully no one was hurt. ( ABC News: Edith Bevin )

The fire spread quickly, with flame heights reaching 30 to 40 metres.

Local volunteer crews from South and North Bruny Island responded with support from a number of firebombing aircraft, the TFS said.

"Fire crews did a tremendous job protecting a number of properties, one property was lost as well as a number of sheds. The full extent of the fires damage is being assessed over the next few days," TFS incident controller Neil Brooksbank said.

Map The operator was controlling the drone from Kettering, in southern Tasmania.

About 5:00pm yesterday, helicopters involved in the firefighting efforts were grounded because of a drone seen flying in their airspace.

Police said the drone, which was being controlled from the Kettering oval area, compromised firefighting efforts and put the Bruny Island community at risk.

"Flying drones near bushfires can be an offence under the Civil Aviation Safety Authority," Tasmania Police said in a statement.

In 2017, CASA used its authority under the Civil Aviation Safety Regulations 1998 to prohibit the operation of drones over fires and any other emergency operations.

Police have not confirmed if the operator was charged over the drone use near the fire area.

Emergency service vehicles pictured travelling to Bruny Island on the ferry on Christmas Eve. ( ABC News: Edith Bevin )

The alert for the fire at Conleys Point and the Cloudy Bay area, South Bruny, has been downgraded to advice level.

Weather conditions over the next few days are favourable for fire crews, the TFS said.

Drones have caused problems for authorities during emergency situations in Tasmania before.

In 2016, the ABC reported drone operators filming flooding in Tasmania were compromising the airspace for rescue aircraft.