(Chadron, Neb.)- Investigators with the Nebraska State Patrol Troop E Headquarters- Scottsbluff say they have uncovered human remains as they continue to investigate the murder of 38-year-old Josh Bullock of Denver.

The remains were uncovered around 11:00 a.m., (MDT), Thursday, June 21, by Nebraska State Patrol Investigators in a remote area south of Chadron. The remains will be taken to Regional West Medical Center in Scottsbluff, where they will be examined by both a forensic pathologist and a forensic anthropologist. DNA testing will also be conducted to determine identity of the remains.

“Our investigators have been searching the area since Monday,” said Investigative Services Lt. Monica Bartling.  “While we must wait for the result of testing to positively identify the remains, we believe them to be those of Josh Bullock.”

Investigators say Andres Gonzalez, a 27-year old Alliance man who held officers at bay during a 14 hour standoff, told negotiators he killed Bullock. Investigators believe Gonzalez killed Bullock on or around December 1, 2011 and that he disposed of his body in a remote area of Dawes County. Bullock’s burnt-out pickup was found by a rancher in a ravine southeast of Chadron on December 14, 2011.

Bullock who lived in Denver, but had family and friends in the Alliance and Chadron areas was last seen the afternoon of December 1, 2011, after visiting family members in Alliance.

Rose Siefke, 19, Hemingford, a former girlfriend of Gonzalez, was arrested on Wednesday, June 13, and lodged in the Box Butte County Jail. Siefke has been charged as an Accessory to a Felony in connection with the death of Josh Bullock. Siefke was released after posting 10% of a $50,000 bond.

The investigation continues.