NEW YORK (AP) — Authorities say they are investigating four fire attacks in New York City, including one at an Islamic center.

Police say three of the attacks Sunday night in Queens involved molotov cocktails. There were no injuries.

In the first attack, a bottle was thrown at a counter in a bodega at 8 p.m.

Ten minutes later, a nearby house was possibly set on fire. It took firefighters 40 minutes to bring the blaze under control.

At 8:44 p.m., a bottle was thrown at the Imam Al-Khoei Foundation building. Only a door of the Shiite mosque was damaged.

The last attack, at 10:14 p.m., was on a private house used for Hindu worship services. Police say two bottles were thrown but didn’t explode.

Police are investigating the attacks as bias crimes.