New York City Mayor Bill de Blasio says New York is constantly on alert for coordinated terror attacks, especially in the wake of an attack in Paris that has killed dozens.

De Blasio said in an interview with WABC-TV on Friday the attack was not only sobering, but a reminder that police officials need to be prepared and vigilant for a possible follow-up attack.

Police have stressed there is “no indication that the attack has any nexus to New York City.”

Officers have been deployed to various locations in the city, including French government buildings.

French officials say several dozen people have been killed in shootings and explosions at a theater, restaurant and elsewhere in Paris.

(AP)