CHICAGO (CBS) — A few car windshields were smashed Saturday night outside a high-rise cooperative housing building in Kenwood.

Neighbors said at least 30 teenagers seemingly appear out of nowhere near the Harper Square Cooperative at 4800 S. Lake Park Av.

A neighbor who asked not to be identified told WBBM she heard a commotion just after 9 p.m., and looked out her window, and saw the kids getting louder, with some running and jumping on top of cars parked on the street.

“We heard glass break, and then I’m hearing kids laughing,” she said.

The neighbor said when she went down to take a look, saw the windshields were completely destroyed on at least four cars.

Police said they’re investigating, but don’t have any further information.