?(Cold Spring, MN) -- State investigators and local law enforcement remain on the scene of Thursday night's shooting that killed Cold Spring Police Officer Tom Decker. Drew Evans, assistant superintendent of the Minnesota Bureau of Criminal Apprehension, says they'll continue to follow up to determine exactly what happened. Officer Decker and his partner were doing a welfare check near Winners bar in Cold Spring when Ryan Larson allegedly ambushed Decker and shot him twice. Thirty-one-year-old Decker is survived by his wife and four young children.