Debris covers the area outside a building in the center...

Debris covers the area outside a building in the center of Oslo after explosions attributed to one or more bombs rocked the city Friday. (July 22, 2011) Credit: AP

The NYPD ratcheted up security Friday after the deadly attacks in Norway.

Extra police were put on duty around Norway's mission and consulate in Manhattan, as well as those of Denmark, Finland and Sweden, NYPD spokesman Paul Browne said.

Police critical response vehicles were also deployed around the city, a standard tactic in times of elevated alert, Browne said. Critical response vehicles are roving motorized units deployed near major transportation hubs, hotels and key areas as deemed necessary by police.

"The Police Department continues to monitor events in Norway closely for further details and possible motives behind the attacks, but we have no information at this time indicating a specific threat against New York City," Browne said.

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