Giant blaze rips through Google’s office in ‘China’s Silicon Valley’ (VIDEO)

The fire, which broke out at 11am local time, burned through the roof of Google’s glass-fronted office building, sending a plume of thick, black smoke into the air.

Employees inside were evacuated from the building, but allowed to return later on, tech journalist Raymond Zhong reported. The cause of the fire is still unknown.

The news came just hours after a bomb threat led police in California to evacuate Facebook’s Menlo Park headquarters. No suspicious packages were found, and the all clear was sounded late Tuesday afternoon.

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