Police chase suspect after shooting at California high school

Authorities in California said on Thursday they were responding to an active shooter situation at a high school in Santa Clarita, a city north of Los Angeles. A suspect described as a male Asian in black clothing was still at large, the Santa Clarita Valley sheriff said on Twitter.

Seagus High School and all schools in the William S Hart district were placed on lockdown while authorities flooded the scene. A local NBC station reported there were several casualties.