AZTEC — A man and a woman have been arrested after they allegedly led the La Plata County Sheriff's Office on a high-speed chase across the Colorado-New Mexico state border Thursday.

The Durango Police Department initially received a report at 3:39 p.m. of a man making threats.

The man's vehicle was identified by a witness, and deputies with the La Plata County Sheriff's Office found the man driving a vehicle and pursued it, according to patrol Sgt. Rita Warfield of Durango police.

The La Plata County Sheriff's Office initially heard reports that the man was possibly accompanied by a woman and child. The San Juan County Sheriff's Office confirmed upon arrest — just before 6 p.m. Thursday — that a child was not in the vehicle with the pair.

Once the pursuit crossed over into New Mexico on U.S. Highway 550, the San Juan County Sheriff's Office took over the pursuit, according to San Juan County Sheriff's Office spokeswoman Beth Utley.

Deputies were led down county roads near the Hart Canyon area outside of Aztec, though they lost track of the vehicle once it got about a half mile ahead of them, according to the police scanner traffic.

The San Juan County Sheriff's Office found the vehicle — a silver van — and continued to search for whoever was in the vehicle. The office's helicopter also was involved in the search.

Utley could not confirm where the man and woman eventually were found, nor what their relationship was.

The man and woman are both are in police custody and are expected to be transported to the San Juan County Detention Center.

Jenny Kane can be reached at 505-564-4636; jkane@daily-times.com. Follow her on Twitter @Jenny_Kane.