Chino police served a drug search warrant at a home in the 6800 block of Rockrose Street around 4pm on 3 July 2019 after a complaint about possible cultivation and trafficking.[1][2] Officers knocked and announced the warrant at least three times, then escorted a 53-year-old woman out of the house and asked her in English whether anyone else was inside.[1] While searching with weapons raised, an officer found Li Xi Wang, 49, of Fontana hiding behind a door, ordered him to show his hands and immediately fired; Wang died later at hospital.[1][2]

Police found no weapons in the home.[1][2] A later search uncovered 1,500 marijuana plants, $35,000 in cash and evidence of grand theft worth over $105,000, and officers said the pair also ran another grow house in Fontana.[1] The woman was arrested on suspicion of illegally cultivating marijuana and grand theft of electricity.[2] The shooting went to the county sheriff’s department and the district attorney for investigation.[1][2]