Authorities said officers were serving a search warrant on a suspect with a deadly weapon at Kornblum Avenue and 132nd Street.
They had to call in the SWAT team for help. The suspect refused to come out, and the incident turned into a potential barricade situation.
Hawthorne police have shut down the neighborhood to traffic. Kornblum Avenue was closed between 132nd and 135th streets while police try and negotiate with the suspect.