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Boston Marathon Explosion Update: Security stepped up worldwide after Boston blasts

A Boston police officer clears Boylston Street following an explosion at the finish line of the 2013 Boston Marathon in Boston, Monday, April 15, 2013. Two explosions shattered the euphoria at the finish line on Monday, sending authorities out on the course to carry off the injured while the stragglers were rerouted away from the smoking site of the blasts. (AP Photo/Charles Krupa) Charles Krupa

A Boston police officer clears Boylston Street following an explosion at the finish line of the 2013 Boston Marathon in Boston, Monday, April 15, 2013.
AP Photo/Charles Krupa
(CBS/AP) - LOS ANGELES - Police in Los Angeles, New York City, London and other cities worldwide stepped up security Monday following explosions at the Boston Marathon.

PICTURES: Explosions near Boston Marathon finish line

Los Angeles police Lt. Andrew Neiman said the department was urging officers to be extra vigilant around large crowds and would increase security at sporting events such as the Los Angeles Dodgers game Monday night.

The department was also activating its emergency operations center to increase communication and increasing patrols for transit and other critical areas, Los Angeles County Sheriff's spokesman Steve Whitmore said.

Meanwhile, police in Washington, San Diego, Vegas and Atlanta were monitoring events closely and assessing potential increases in security measures. Agencies were also stepping up social media response, telling the public via Twitter and Facebook to report suspicious activity to the police.

Chief NYPD spokesman Paul Browne said Monday that critical response teams were deployed around the city, and officials were stepping up security at hotels and other prominent locations.

CBS News correspondent Bob Orr reported that New York authorities were moving counterterrorism forces into place around major centers and landmarks in the aftermath of the explosions.

Police at three major Los Angeles area airports, including Los Angeles International Airport, were in a "heightened state of vigilance," with increased patrols to make it visible that more police were on duty Monday, said Chief of Airport Police Patrick Gannon.

"We have no indications that suggest there's a nexus from Boston to the Los Angeles airport, but in an overabundance of caution, we have heightened our patrols," Gannon said.

British police also said they were reviewing security plans for Sunday's London Marathon. It's the next major international marathon. A London Metropolitan Police spokesman said police are working with marathon officials to review security plans with an eye toward establishing a larger security presence.

On Monday, California emergency management officials activated their statewide threat assessment system, which was established following the Sept. 11, 2001 World Trade Center bombings.

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

In Tennessee, the Nashville Predators will host the Vancouver Canucks on Monday night and hockey fans will see "more visible presence around the building," team spokesman Kevin Wilson said.

Complete coverage of Boston Marathon explosions on Crimesider

  • Crimesider Staff

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