OMAHA, Neb.—Authorities say a gunman who died during a 14-hour standoff with police at a pharmacy in Alliance admitted he killed a Colorado man in 2011.
The Nebraska State Patrol says 27-year-old Andres Gonzalez told negotiators during Tuesday’s standoff that he killed 38-year-old Joshua Bullock, of Denver.
Investigators believe Gonzalez killed Bullock around Dec. 1, and disposed of the body in a remote area of Dawes County in the Nebraska Panhandle. Officials say Bullock’s burned pickup was found by a rancher in a ravine near Chadron on Dec. 14. Chadron is 50 miles north of Alliance.
A search for Bullock’s remains is under way.
Authorities have arrested Gonzalez’s girlfriend, 19-year-old Rose Siefke, of Hemingford, on a charge of being an accessory to a felony.
Bullock had ties to Chadron and Alliance


![20151207__denverpost~p1.jpg [prison 19] Caption: This is Cellhouse 1, Pod A, from ground level inside the Sterling Correctional Facility which is located outside of Sterling, Colorado Thursday afternoon. Photographer: LEW SHERMAN Title: FREELANCE Credit: SPECIAL TO THE POST City: Sterling State: CO Country: USA Date: 19990617 ObjectName: prison 19 Keyword: PUBDATE____1999_06_22](/wp-content/uploads/2016/04/20151207__denverpostp1.jpg?w=538)
