Advisory
Update: UCPD has cleared the area of Marble Ct. and Serpentine Dr.
Update: UCPD has cleared the area of Marble Ct. and Serpentine Dr. 
Update: UCPD has cleared the area of Marble Ct. and Serpentine Dr. There is no longer any police activity.
Address/Location
Union City Police Department, CA
34009 Alvarado-Niles Road
Union City, CA 94587
Contact
Emergency: 9-1-1
Non-emergencies: 510-471-1365