Read more in this article published today:

The number of in-custody sudden deaths rose dramatically during the first year California law enforcement agencies began using stun guns, raising questions about the safety of the devices, according to a new study at UCSF.

"Tasers are not as safe as thought," said Dr. Byron Lee, one of the cardiologists involved in studying the death rate related to Tasers, the most widely used stun gun. "And if they are used, they should be used with caution."

And more on this issue in Portland can be found in my November feature.