"The clerk first used a Taser, but it did not stop the robber. Police said the clerk then shot the suspect."

At least the clerk had his gun when the taser failed to stop the armed robber. The article is here:

Store clerk shoots would-be robber
MIKE BRANOM, East Valley Tribune
A man’s attempted armed robbery of a central Mesa store was foiled Sunday when the clerk fought back with a Taser, his fists and a handgun, police said.

The 30-year-old suspect, shot several times by a clerk at Mesa Mart, 1510 S. Country Club Drive, was listed in critical condition at Scottsdale Healthcare Osborn, police spokeswoman Detective Chris Arvayo said.

Although the 55-year-old clerk had been assaulted with a pipe, he did not require extensive medical attention.

The clerk most likely will not face any criminal charges.

“He’s got the right to defend himself,” Arvayo said.

However, the suspect probably will be charged “once he’s better,” Arvayo said.

The incident began about 8 a.m., when the suspect entered the store near U.S. 60. He then demanded money while striking the clerk with a pipe.

The clerk first used a Taser, but it did not stop the robber. Police said the clerk then shot the suspect. . . .