"A suspect was confronted and died at the scene," police say. "There are several civilian casualties, with at least three killed," they say.
Schools were closed, while videos circulated on social media showing a heavy police presence. There have been more than 220 shootings this year, according to nongovernmental organization Gun Violence Archives."There are no further threats at this time," the police department says on its Twitter account, adding that the suspect is unknown.. Two were injured and taken to a hospital, where they were treated and are "in stable condition," authorities say.