The state government has defended Tasmania's laws relating to arson offences by saying they are the strongest in the country.
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Many in the community have called for tougher penalties after it emerged a recent fire at Fingal was deliberately lit.
The fire is one of several that have burned in the state this week, putting homes and lives at risk.
The police investigation into the Fingal fire followed confirmation from the state's Parks and Wildlife Service that some campers in the state's reserved areas had flouted a total fire ban earlier this week.
When asked whether the government was considering stronger penalties for arson offences, Premier Will Hodgman said the act could attract up to 21 years' jail.
"Deliberately lighting a bushfire is absolute idiocy and has potentially catastrophic consequences," he said.
"Tasmania Police are working hard to catch suspected arsonists and actively monitor known and suspected arsonists during high fire danger."
There were 449 arson and related offences recorded by Tasmania Police in 2018-19.
Of the offences in 2018-19, 6 per cent related to vegetation and 82 per cent to property.
The result last financial year was lower than than the three-year average of 504 arson and related offences.
A 2012 report from the state's Sentencing Advisory Council recommended an amendment to the Criminal Code to include a new offence for starting bushfires.
The council noted bushfire arson had been claimed to have the lowest clear-up rate of any crime in Australia.
It said there was an argument that deliberately lit bushfires attracted comparatively light sentences to the harm caused.