http://www.10news.com/news/16155367/detail.html
SAN DIEGO — An explosion in front of the federal courthouse in downtown San Diego early Sunday blew out a window and damaged a door.
The loud blast at 940 Front St. occurred about 1:40 a.m., said Sgt. Bob Dare of the San Diego police department.
Some metal fragments from the explosion were found across the street, according to a freelance cameraman at the scene.
No one was injured, Dare said.
The Metro Arson Strike Team was assigned to the investigation, he said.
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