By Jimmy Lee, Director of Public Affairs, Contra Costa County Office of the Sheriff
Detectives from the Contra Costa County Office of the Sheriff and the Danville Police Department this afternoon received notification from the Kane County Sheriff’s Office in Illinois that a suspect being sought in a homicide in Danville had apparently shot and killed himself at his parents’ home in St. Charles, Illinois.
Detectives were looking for 51-year-old Mark Allan Sypien of Dublin in connection with the killing of Danville resident John Moore. The shooting happened on Sunday, February 24, 2019, at about 2:25 PM. Danville officers were dispatched to the 3400 block of Fostoria Way for a report of gunshots. Officers arrived finding Moore suffering from gunshot wounds. He was pronounced deceased at the scene.
Investigators identified Sypien as the suspect in the killing. An arrest warrant for murder had been issued for him.
Detectives continue to work with their counterparts in Illinois.
Anyone with any information on this case is asked to contact the Contra Costa Sheriff’s Office Investigation Division at (925) 313-2600. For any tips, call 866-846-3592 to leave an anonymous voice message or email: email@example.com.
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