Security in most of the US cities including New York and Boston has been tightened after the Paris terror attacks that killed about 150 innocent people in six different locations.
According to law enforcement officials, the bolstered security is a precautionary rather than a response to any threats from terror groups.
The New York Police Department (NYPD) released a statement revealing teams have been dispatched to the crowded areas that are frequented by tourists and also at the French Consulate in Manhattan.
However, it is not revealed how many extra officers have been deployed to guard the areas of concern.
The top target is believed to be the site of September 11, 2001, hijacked plane attacks in New York that destroyed both the towers of World Trade Center and killed about 3,000 people.
On Friday night the spire at One World Trade Center and top of the Empire State Building were lit up with blue, white and red colors to mourn for the Paris attacks.
The colors of French flag are same blue, white and red.
The US Department of Homeland Security Secretary Jeh Johnson said they don’t have any specific threats of any attacks and not the type that took place in Paris.
The Port Authority of New York and New Jersey said all the rail facilities, tunnels and bridges are put on high alert and patrolings have been increased with checking of trains, buses as well as bags of passengers.
The US Capitol Police in Washington too has increased the securities across the Capitol complex even though there is no known threat to it.