[wildbill]

Generally, if you put a bag over someone's head, you're often not trying to kill them, but rather extort them or get some information out of them," said Alfonso Navarrete Prida, the attorney general of the State of Mexico"

He ought to know. That's a favorite tactic of the Judicial Police (sort of a combined CIA/FBI/Mafia)in Mexico.

[investigateworld]

"...favorite tactic..."

The Mexican cops I know prefer to tilt the subjects head back and pour 7-Up down the nostrils. They tell me, after that they can't get the suspect to shut up.