FARMINGTON — Farmington police say a 17-year-old with autism and a history of running away from home is again missing.

Travis Brown was last seen getting into an "old beat up silver Honda" near Farmington High School Thursday afternoon, according to police. Farmington High School Principal Tim Kienitz said in an email that a video shows Brown getting into the car just before 4 p.m.

Brown has blonde hair and blue eyes, is 6 feet tall and weighs about 140 pounds, according to the release. Brown has Asperger syndrome, which is a mild form of autism.

He was last seen wearing a green Farmington High School T-shirt, black jeans and glasses.

Farmington police Detective John Bonnell said police "pinged" Brown's phone, and it showed he was near Animas Valley Mall at 9 a.m. Friday.

Bonnell said police spoke with Brown's relatives who live in the area and neighbors nearby but no one had seen him.

A "ping" is when cell phone companies provide law enforcement with the approximate location of a person in an emergency situation. A person has to keep his or her phone on to be tracked, Bonnell said.

By Friday evening, Brown's phone was dead, and police couldn't track it, Bonnell said.

In September, Brown was the subject of a large-scale search that involved multiple law enforcement agencies after he got into a fight with his parents and left the city. He hitchhiked to Durango, Colo., spent the night at a Colorado couple's home and was found the next day going to the Durango and Silverton Narrow Gauge Railroad and Museum in Durango, according to police.

Anyone with information on Brown's whereabouts is asked to call Bonnell at 505-608-1502.

"We've notified Durango (police) and La Plata County (Sheriff's Office) and law enforcement throughout the county," Bonnell said. "Hopefully, we find him again soon."

Ryan Boetel covers crime for The Daily Times. He can be reached at 505-564-4644 and rboetel@daily-times.com. Follow him on Twitter @rboetel on Twitter.