A Tasmanian Liberal politician accused of catfishing two women has resigned one day after being elected to parliament after being charged with weapons offences.
Adam Brooks was elected on Thursday in the northwest electorate of Braddon following the May 1 state poll but will now not take his seat.
Premier Peter Gutwein revealed on Friday that Mr Brooks is undertaking treatment for his mental health and was charged on Thursday in Queensland with firearms offences and in relation to a "document".
Mr Gutwein spoke to Mr Brooks on Thursday night after he was charged, and said he was "not in a good space".
"Due to his state of health and the need to focus on his own personal circumstances, it is his intention not to take his seat in parliament and to forward his resignation to the governor," Mr Gutwein told reporters in Launceston.
"I was provided with new information. Mr Books has decided to take the action I have outlined ... and I completely support that decision."
Queensland Police have confirmed a 45-year-old Tasmanian man was charged with alleged weapons offences, unauthorised possession of explosives and dealing with identity documents.
Police conducted a search warrant at a Redcliffe address on Wednesday night and allegedly seized a handgun and false driver's licences.
The man is expected to appear in the Redcliffe Magistrates Court on Tuesday.
Mr Brooks was accused by two women during the campaign of using fake online dating profiles under the name Terry.
He has strongly denied the accusations and flagged legal action against certain people he says have made false claims about his private life.
Mr Brooks' resignation will trigger a recount in the electorate of Braddon which is likely to take weeks, with Mr Gutwein expecting the seat to be awarded to fellow Liberal Felix Ellis.
The Liberals were returned to power at the election with 13 members, a one-seat majority, in the state's 25-seat lower house.
Mr Gutwein said Mr Brooks, who left for Queensland on Wednesday, intends to fight the new gun charges.
Mr Brooks was charged by Tasmania Police during the campaign with gun offences relating to ammunition storage.
Mr Gutwein said he did not regret backing Mr Brooks, the state's former mining minister, as a candidate.
"You can only take people at face value and on their word," he said.
"In terms of the conversations I've had with Mr Brooks over the period leading up to him being a candidate, and then throughout the campaign period, he has been emphatic in his denial of the allegations against him."
Mr Brooks was elected to parliament in 2010 and promoted to cabinet in 2016, but abruptly resigned in 2019 after an Integrity Commission report into his use of his mining service company email.
He was cleared of misusing information and breaching the ministerial code of conduct but was found to have not accurately informed then-premier Will Hodgman about his business dealings.
Australian Associated Press