Man trying to board flight he was denied is tasered

A man who was denied permission to board a Turkish Airways flight and who then tried to do so anyway has been tasered. In the moments before that happened he was apparently mostly incoherent as authorities tried to question him at Pearson Airport. It appears he may have mental issues. Audio from the cell phone video posted on YouTube is not very clear but police say they had various questions to which he essentially did not respond. Cops wanted to know what was in his briefcase, for example.