A massive explosion rocked Chevron’s El Segundo refinery in Los Angeles County late Thursday night, October 2, triggering a large fire that sent thick plumes of smoke into the night sky. Firefighters rushed to the scene after multiple reports of an explosion, with witnesses comparing the blast to a small earthquake. Videos shared on social media by user @divalbanerjee captured the dramatic flames and black smoke rising high above the facility. California Blast: 3 Killed in Explosion at Police Training Facility in US (Watch Videos). The above post contains publicly available embedded media, directly from the user's social media account and the views appearing in the social media post do not reflect the opinions of LatestLY.)