Investigators in Nebraska said they have found human remains believed to have belonged to a Denver man who may have been the victim of a murder.The remains were uncovered around 11 a.m. Thursday by Nebraska State Patrol investigators in a remote area south of Chadron, Neb. The remains will be taken to Regional West Medical Center in Scottsbluff, Neb. where they will be examined by both a forensic pathologist and a forensic anthropologist. DNA testing will also be conducted to determine if it belonged to 38-year-old Josh Bullock of Denver."Our investigators have been searching the area since Monday," said Lt. Monica Bartling, with Nebraska State Patrol. "While we must wait for the result of testing to positively identify the remains, we believe them to be those of Josh Bullock."Police believe Bullock was killed by 27-year-old Andres Gonzalez.Gonzales held officers at bay during a 14-hour standoff last week before he was shot and killed.During the standoff, he told negotiators he killed Bullock. Investigators believe Gonzalez killed Bullock on or around Dec. 1 and that he disposed of his body in a remote area of Dawes County.Investigators have not said why Bullock was killed. He had family and friends in the Alliance and Chadron areas and was last seen on Dec. 1 after visiting family members in Alliance.Bullocks burnt-out pickup was found by a rancher in a ravine southeast of Chadron on Dec. 14.