Authorities say the suspect punched the officer around 6:20 p.m. outside a home where a large crowd had gathered to search for two missing girls. The home was later lit on fire and police say multiple officers were injured.

The suspect is described as a black male between the ages of 16-22. He was last seen wearing a black cap, a black Nike hooded sweatshirt with a white, diamond-like image on the front, black shorts with a white outline on the bottom, and black flip flops. 

Anyone with information is asked to contact Milwaukee police at 414-935-7360 or Milwaukee Crime Stoppers at 414-224-TIPS, where they can receive a cash reward of up to $1,000.