Explosion at Paypal offices — bomb?

A large explosion occurred Tuesday night at Paypal's Silicon Valley headquarters. No one was injured.

Investigators believe an explosive device caused a six-by-seven-foot window to shatter, although they only found remnants of what that they think broke the window, Capt. Jose Guerrero said. "Whatever it was, it disintegrated," he said.

Link to SF Chron story, Link to SJ Merc News.

(thanks kingkong)