A Democrat congressional candidate from Hawaii allegedly pulled a gun on officials after storming a government building — swiftly landing him in handcuffs.

Kirill Basin, 40, allegedly threatened two Maui County workers during the terrifying incident at around 9:30 a.m. on Friday before fleeing the building in Wailuku, Civil Beat reported.

The longshot candidate for Hawaii’s 2nd Congressional District was arrested at his home around 12:30 p.m. on a terrorist threatening in the first degree charge.

Basin bizarrely claimed in an Instagram post on Thursday the day before his arrest that cops had tortured him for 14 hours.

“This is the lawsuit I served today. It basically outlines how 3 police officers tortured me for 14 hours,” he wrote. “That’s the gist. It’ll never happen to anyone again.”

The lawsuit accused police of subjecting Basin to “prolonged and deliberate infliction of physical, sexual and psychological abuse” while in custody.

He filed the lawsuit himself and is not being represented by an attorney, court records show.

Basin’s behavior became increasingly erratic in the days before Friday’s incident.

Two days before his arrest, he had to be escorted from a town hall meeting in South Maui by police after an argument with Council member Tom Cook and his staff, authorities said.

After he was escorted from the town hall, he confronted Cook’s executive assistant in the parking lot, requiring police to intervene once again, according to a petition filed Friday afternoon.

The assistant, Jared Agtunong, filed a petition for a temporary restraining order against Basin shortly after 3 p.m. on Friday.

Basin had also set Agtunong a series of cryptic and explicit texts and called him, according to the petition.

“I did not answer Basin’s phone call, but he left a message telling me that I’m a piece of trash, said I should think of my family and insisted I call him back,” Agtunong wrote.

“In additional texts sent on the same day, Basin wished me luck with prison then at 9:00 p.m., Basin’s text said ‘you’re f–ked,’” he continued.

A judge granted Agtunong’s temporary restraining order petition within two hours of filing.

On May 2, Basin was arrested for disorderly conduct, although few extra details were released.

Basin did not respond immediately to requests for comment.