Seven people were injured, including one with critical burns, after an explosion Thursday at the Taser International plant in north Scottsdale, authorities said.
The incident happened around 4:15 p.m. at the facility near Perimeter Drive and Mayo Boulevard.
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One man was transported from the scene in critical condition while six others were hospitalized in stable condition with non-life threatening injuries, Scottsdale Fire Department officials said.
It wasn't immediately clear if all of the injured were Taser employees, and their names and ages weren't released.
“We normally work four, 10 hour work days, so we were actually shutting down at 4:30,” said Taser spokesman Steve Tuttle. “This was the cleanup period for the production line. So they were already shutting down and cleaning up. That’s when the accident occurred.”
Nine other people who were evacuated from the Taser production facility refused treatment, Fire Battalion Chief Chris Schibi said.
Schibi said. It wasn't immediately clear how the explosion occurred and what it involved, he said.
Firefighters and city police remained at the plant Thursday night and were working with Taser representatives to determine what happened.
Taser is a developer, manufacturer and distributor of electrical stun guns, body-worn cameras and other items that are mainly used by law enforcement and the military.
The facility is usually closed on Friday's. They plan to pick up with business as usual on Monday.
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