Overview

• Alameda County prosecutors filed first-degree murder with a firearm-use enhancement and six felony explosives counts against 28-year-old Lucas Chan.
• Police and court records say Chan admitted firing multiple rounds through his closed bedroom door with the intent to kill whoever was outside.
• Lance Chan, 61, was shot inside the family’s Helpert Court home on Aug. 15 and later died at a hospital, and his son surrendered to arriving officers.
• The sheriff’s Explosive Ordnance Disposal team reported finding multiple explosive devices and materials in the residence, leading to additional possession charges near populated locations.
• Court filings describe strained family relations, surveillance showing the suspect urinating on grocery bags before the shooting, and an unsubstantiated allegation of past abuse he raised with investigators.