Romana Didulo, a QAnon-inspired conspiracy theorist, has been arrested by the Royal Canadian Mounted Police (RCMP).

Ms Didulo was arrested along with 16 others after law enforcement executed a search warrant at a decommissioned school on Wednesday, according to RCMP officials.

Ms Didulo, who styled herself as the "Queen of Canada" and leads a group called the "Kingdom of Canada", has been living in the village of Richmound, Saskatchewan, for the past two years.

She posted a livestream of what appears to be her arrest on her Telegram page on Wednesday. The video shows at least three armed officers entering the room, with one saying: "Leave the phone down. You're under arrest."

Authorities obtained a search warrant for the property after receiving a report last month that someone at the property had a firearm, which are federally regulated in Canada.