Kayla Chadwick Found: Police locate remains of Colo. teen who disappeared in 2012

(CBS/AP) FORT MORGAN, Colo. - Police in Fort Morgan, Colo. say that DNA tests have confirmed that human remains found last week are that of missing teenager Kayla Chadwick. The girl had been missing since March of last year, when she was 17, CBS Denver reported.

Police have said that Chadwick disappeared after an argument with her 19-year-old boyfriend, Ivan Torralba. The two were senior classmates at Fort Morgan High School.

Police said the cause of Chadwick's death remains unknown. Her remains were found in a rural area about one mile east of Highway 52 and the Fort Morgan Municipal Airport, according to the station. Police have not said what led them to that area.

Officers rearrested Chadwick's boyfriend last month on a drug violation. He was on bond on perjury charges related to the girl's disappearance. However, he has not been charged with committing a crime against Chadwick and has not been named a suspect.

"We're looking at the overall investigation. Looking at every possible person that we can that's been or could be involved in the case," Fort Morgan Police Lt. Jared Crone said, according to the station.