Video posted online shows a man being tasered and arrested after allegedly trying to pass through a secured boarding area and onto a Turkish Airlines flight.
The incident happened at Toronto's Pearson International Airport on Thursday.
According to CBCNews.com, the man was carrying a briefcase and would not respond to officers.
Police say the man was in his 20s, did not suffer any injuries, and was taken to a nearby hospital to be assessed by doctors.
An airport passenger posted the video online.