Laura Ragless, who owns the Larrimah Pink Panther Hotel and the Stuarts Well Roadhouse on the Stuart Highway south of Alice Springs, announced the closures on social media, saying government harassment had taken its toll.
NT Police said in a statement that officers searched the Stuarts Well Roadhouse and an adjoining property on Wednesday after a tip-off alleging breaches of the venue's liquor licence. They allege they found an unsecured firearm and ammunition, 214 packs of illegal cigarettes, six unlawfully imported OC spray canisters and $3,800 in cash.
Three men were charged: a 59-year-old with unlawfully possessing a Schedule 8 drug, a 33-year-old with breaching his firearms licence conditions, and a 71-year-old with manufacturing, selling or purchasing a prohibited weapon. They are due to face Alice Springs Local Court in January.
The alleged liquor licence breaches have been referred to Licensing NT.
Ms Ragless posted photos on Tuesday of Outlaws gang members at the roadhouse, welcoming them and calling the visit a "charity run". Under NT law, licensees must direct outlaw motorcycle gang members to leave if they refuse to remove club identifiers.
In subsequent posts, Ms Ragless called the charges "trumped up", claimed the tobacco products were "personal cigarettes not sold in or around the roadhouse", and alleged "corrupt cops" had locked down the property without producing a warrant.
"We will always respect our supporters but no longer can take the government harassment the convicts running this country," she wrote.