Authorities are asking for the public's help in identifying the owner of a truck that was seen on a surveillance camera near the time and place where Amber Dubois vanished two months ago.

The maroon or burgundy-colored pickup was driven through a bus maintenance yard at Escondido High School, where 14-year-old Amber Dubois attended, shortly after 7 a.m. Feb. 13, minutes before she went missing, according to police.

Investigators have generated no solid leads about what has become of the girl, an exemplary student with no history of running away from home.

Numerous searches of the area by groups of volunteers have likewise found no sign of where she might have gone.

In the security-camera footage, the reddish full-sized truck can be seen entering the school lot, where it is then parked for about three minutes before being driven back out the same driveway, onto North Broadway, Lt. Bob Benton said.

The pickup, which appears to be a late-model crew-cab model with four doors, is equipped with chrome parts, including wheels, running boards and bed rails, Benton said.

"Also, it appears from the video the tailgate is either missing or (modified) to accommodate a fifth-wheel trailer," the lieutenant said. "There is no further information such as license-plate or driver description."

Police asked anyone with information about the vehicle or any other aspect of the case to call (760)743-TIPS. Callers may remain anonymous.