In the wake of an attack on a Jewish school in France that left four dead, the New York Police Department is increasing security on Jewish sites within the city, according to an article from The Associated Press.

The NYPD dispatched extra patrols to more than 50 locations, including the Museum of Jewish Heritage in lower Manhattan, the Israeli Mission to the United Nations in midtown and the 92nd Street Y on the Upper East Side, the article says. 

The shooting Monday took place at a Jewish middle school and high school in the southwestern French city of Toulouse, north of the Pyrenees mountains. An armed man on a motorbike or dark-colored scooter drove up just before classes started and opened fire, killing a rabbi, his two sons (ages 3 and 6) and an 8-year-old schoolgirl. 

NYPD Commissioner Raymond Kelly said that although no specific threats had been made against New York, which has the largest Jewish population outside of Israel, the department is taking precautionary measures, the article says. 

"We have to be concerned about what happens overseas," Kelly said in the article. "We have a significant Jewish population in this city, and we have to take that into account."

He added: "We know that we're at the top of the terrorist target list, so we;re concerned about the so-called copy cat syndrome, where someone might see the events unfolding in Toulouse and take it upon themselves to act out."