SACRAMENTO, Calif. -

California emergency management officials have activated a statewide threat assessment system after explosions at the finish line of the Boston Marathon.

Kelly Huston, assistant secretary of the California Emergency Management System, says officials in San Francisco, Los Angeles, Orange County, San Diego and Sacramento were reviewing information Monday from federal authorities for possible threats.

Huston said they are investigating whether there is "any shred of information" that correlates to known threats in California, which could mean adding more police or stepping up security at large events.

Right now there is no known connection to California but Huston says "the sooner we can find connections and then do something about it, the safer we are."

The system was established following the Sept. 11, 2001 World Trade Center bombings.