Chicago police are searching for the suspect who threw a large rock into the windows of ABC owned station WLS last Thursday afternoon.

The rock was thrown just after the start of the 4 p.m. newscast downtown.

The station said a man took a large rock out of a plastic bag and threw it against the window twice. The glass partially broke and no one was hurt.

The suspect is described as having a thin build, weighing about 150 pounds and having salt and pepper hair.