The Shaare Tova Synagogue in Kew Gardens, Queens. (Andrew Schwartz/for New York Daily News)

Nobody was hurt when someone tossed an explosive device outside a Queens synagogue on Friday night, law enforcement sources said.

A man driving a van believed to have fled the scene was being questioned about the incident late Friday, said the sources.

The device was tossed around 7:45 p.m. outside the Shaare Tova Synagogue on Lefferts Blvd. in Kew Gardens.

A man was seen placing a box in front of the synagogue before the blast, said the sources.

But police later said the incident involved “an individual on the street and two individuals in a van. It appears that [someone in] the van tossed a firework onto the sidewalk which was set off as they drove away.”

“The noise was like something collapsing,” said a neighbor. “It was in the back of the synagogue. I rushed out to make sure everything was all right, and the police were everywhere.”

Police stopped an old brown van nearby that they believed fled the scene, and took its driver into custody, said sources.