Yes, he was tasered as he tried to escape.
"On July 31, 2008, at 1:30 a.m., the suspect attempted to escape from the bus by breaking through a window. The RCMP arrested Li soon afterward. He was shot with a Taser twice, handcuffed and placed in the back of a police cruiser. Parts of the victim's body, placed in plastic bags, were retrieved from the bus, while his ear, nose and tongue were found in Li's pockets. The victim's eyes and a part of his heart were never recovered and are presumed to have been eaten by Li."
This guy was scarier than the kid and yet the cops handled the situation effectively without danger to themselves or other passengers nearby.