Poll: Ban Taser Guns?

The country's police chiefs have launched a review of all information on the use of Taser guns in the wake of two recent deadly incidents involving the weapons.

At least six people have died in Canada after being shocked by Tasers.

The devices fire two barbs attached to a wire that deliver a 50,000-volt shock on contact for up to five seconds. The weapon is meant to immobilize aggressors by shocking their muscles.

Police like the Taser because it offers a less than lethal option'' for dealing with dangerous and unstable people. But critics say the weapon is sometimes lethal.

Amnesty International has said the weapon should be banned until more tests are done to determine its safety. The human rights group says the guns can be deadly when someone is in a weakened state because of heart problems or drug use.