(LAPD amps security around city/Creative Commons)

The L.A. County Sheriff's Department is on heightened alert today, which "includes increased patrols to create a more visible presence where people congregate, such as government buildings, shopping centers, athletic events, and public transit," Sheriff Lee Baca said in a release.

Dodger stadium amped up security during their game tonight with help from the Los Angeles Police Department, who added extra patrols and personnel.

ALSO: Boston Bombings: 3 Dead, 144 Injured

Security at Metro facilities, including Union Station, has been beefed up today as well, with additional officers and K-9 units patrolling stations, says City News Service. Metro service should remain uninterrupted.

The Los Angeles International Airport, the target of the failed 1999 "millennium bomb plot," has enacted strict security measures, according to the Los Angeles Times. LA/Ontario International and Van Nuys airports along with the Port of Los Angeles will also see jumps in security.

"While there is no information to suggest that there is any nexus to the Los Angeles area, in an abundance of caution, Airport Police has increased its presence at LAX, LA/Ontario International and Van Nuys airports by deploying bomb-detection canines, additional patrol officers and seucirty personnel,'' according to a statement from Los Angeles World Airports.

Los Angeles Mayor Antonio Villaraigosa said in a statement: “We are working closely with our law enforcement partners to monitor the situation and stand ready to aid Boston in any way possible. The LAPD and other public safety agencies will remain vigilant at all public and sporting events in Los Angeles.”

Security has been tightened across all of Southern California, with state officials calling for heightened vigilance and the activation of a statewide threat assessment system, according to the O.C. Register.

Officials in San Francisco, Los Angeles, Orange County, San Diego and Sacramento were reviewing information from federal authorities involving possible local threats, said Kelly Huston, assistant secretary of the California Emergency Management System.

Police in New York, Chicago, Washington D.C. and other major urban centers have also amped security personnel in the wake of the Boston bombings.

"At this point we don't see a connection to California, but it's pretty early," Huston told the Register.

Read more at the L.A. Times

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