A truly startling incident occurred at a Greenwich Village restaurant this evening: A man apparently emerged from a sidewalk subway grate to throw a smoke bomb into Bar Pitti—and then went back down the grate. It does not appear there were any injuries.

The restaurant is on Sixth Avenue between Houston and Bleecker Streets. WABC 7 reports, "The smoke bomb landed on a table." Actress Rose McGowan was at the restaurant at the time:

One witness, Da Silvano manager Anthony Curko, told the Post, “I saw him come out — it was like Ninja Turtles." And another spoke to WCBS 2, "First thought was ISIS with everything going on. It’s scary. It’s nerve-wracking, as a native Long Islander coming to the city for dinner with friends and family. I’m glad I didn’t bring my daughter."

According to NBC New York, "A witness said the smoke bombs looked like red safety flares as they went off.... The suspect was described as a man in his 30s, wearing a baseball cap and a shirt with an American flag on it."

The police say the investigation is ongoing.

Update: Police have now released video of the suspect throwing the smoke bomb. You can see it below.