Man Tasered by police at Toronto's Pearson airport

WARNING: Video contains content that may be disturbing to some.

A man was Tasered and arrested at Toronto's Pearson International Airport Thursday night, and the incident was caught on video.

Police said a 19-year-oldman tried to go through a restricted door at Terminal 1 for a Turkish Airlines flight after he wasrefused entry to board. The man had already cleared airport security before the incident and had a boarding pass for the flight.

He was carrying a briefcase and would not respond to officers' attempts to communicate with him, according toPeel Regional Police Const. George Tudos.

A bystander at the airport in Mississauga, Ont., recorded the conclusion of the incident and posted the video to YouTube.

The video shows the man standing mostly motionless throughout his interaction with officers, but Sgt. Matt Smallsuggested the scene was somewhat more chaotic before the camera started rolling.

"My understanding is that he was a bit more aggressive," Small said in a telephone interview with The Canadian Press. "He was being loud, and that's what actually caused our attendance. People were concerned."

One of the officers eventually Tasered the man, who fell forward to the ground before being taken into custody.The man was detained under the Mental Health Act and transferred to a nearby hospital for assessment.

Tudossaid the man "did not sustain any injuries," and has not been charged with any offence.

Taser used because man wouldn't respond

Police decided to use non-lethal force because the man did not seem able to communicate, Tudos said.

"Ensuring the safety of the male party and also the safety of the officers, we have to take into account everything," he said.

"Also the unknowns are there as well, too. We don't know what that male is capable of, what his intentions are, and what he was in possession of."

Police said Friday there was "nothing nefarious" in the man's briefcase.

Security consultant and former police officerRoss McLeantold CBC News that in his opinion the officers involvedacted appropriately given the circumstances and deployed the Taser "exactly to the spot where the manufacturer tells you to aim."

McLean said the incident is not comparable to thehigh-profile 2007 death ofRobert Dziekanskiat Vancouver International Airport. Dziekanskidied after being repeatedly Tasered by RCMP officers.

"When you look at the Vancouver exercise, it was out of control," he said. In this case, police used the Taser only once and appeared to tryto minimize harm to the man, which he says can be seen on the video.