A Gatineau mayoral candidate was taken into police custody Tuesday morning while launching his campaign on a highway median.

Francois D'Aoust mayoral candidate campaign launch

Gatineau mayoral candidate Francois D'Aoust launched his campaign on the Highway 50 median at the de la Gappe exit on Tuesday morning. (Patrick Pilon/Radio-Canada)

Francois D'Aoust was waving a shovel with the word "Merci" on it and was shouting at passing vehicles on Highway 50 during the morning commute at about 6 a.m., according to Radio-Canada reporter Patrick Pilon, who was there.

A Sûreté du Québec police cruiser showed up to the de la Gappe exit at about 6:30 a.m. and took D'Aoust into custody.

He was issued a fine of $501.

D'Aoust's campaign was set to officially launch at 8 a.m.

D'Aoust returned just before 8:10 a.m. for a press conference at a cafe just a five-minute walk away from the highway, Pilon reported.

Municipal elections across Quebec are set for Nov. 3.