Calgary police confirm Alan Hallman was charged after a disturbance was reported late Friday night at the party's convention hall in the city's downtown.
Police say Hallman had been detained by security by that time.
Alberta Conservative MP Jason Kenney speaks to media in Edmonton on Aug. 1, 2016. (Photo: Jason Franson/The Canadian Press)
He was released on a promise to appear and no court date has been set.
Hallman says in a statement he regrets any inconvenience resulting from the incident and will work to resolve it quickly.
Hallman left Kenney's campaign in January after he was suspended from the party for inappropriate tweets.
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