RCMP in Prince George said Friday that the device was used on the boy after a 37-year-old man was allegedly stabbed by the boy on Thursday evening.
Police found the boy inside a group home next door and, when the boy came out, he was shocked with a stun gun.
The RCMP wouldn't release any new information on the boy's case on Saturday, and said the incident is under investigation by the West Vancouver Police Department, whose officers will be flying to Prince George on Monday.
David MacAlister, an associate professor at Simon Fraser University's School of Criminology, studies police policies on the use of Tasers, or conductive energy weapons.
"It doesn't seem right," MacAlister said. "Canadian law doesn't even hold individuals who are under the age of 12 criminally responsible." (read more)