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Security alert US nuclear plant Bomb scare shuts US nuclear plant
(10 minutes later)
The largest nuclear power plant in the US has been put into "lockdown" after an explosive device was found in the truck of a worker, officials said.The largest nuclear power plant in the US has been put into "lockdown" after an explosive device was found in the truck of a worker, officials said.
The incident occurred at the Palo Verde Nuclear Generating Station in Wintersberg, about 30 miles (48km) west of Phoenix in Arizona.The incident occurred at the Palo Verde Nuclear Generating Station in Wintersberg, about 30 miles (48km) west of Phoenix in Arizona.
The contract worker has been detained and is being questioned, security officials said.The contract worker has been detained and is being questioned, security officials said.
A spokesman for the local authorities said the device had been made safe.A spokesman for the local authorities said the device had been made safe.
Safety procedures
The power plant said it was operating normally and there was no risk to the public.The power plant said it was operating normally and there was no risk to the public.
The Nuclear Regulatory Commission said the device was a small capped pipe with a suspicious residue.
No-one is allowed to leave or enter the plant during the "lockdown".
Randy Edington, chief nuclear officer of Arizona Public Service, which operates the plant, issued a statement saying: "Our security personnel acted cautiously and appropriately, demonstrating that our security process and procedures work as designed."
Palo Verde supplies power to four million customers across four states.