Authorities say a BMW was racing another vehicle at 100 m.p.h. when it crashed into trees and down an embankment in Montgomery County this weekend, killing two passengers.

Police have identified the victims and are now looking for the second vehicle.

The crash happened shortly after 12:01 a.m. Saturday, when the 2007 BMW crashed through a guardrail on Route 422 in West Pottsgrove, became airborne, hit several trees and came to a stop on its roof at the bottom of an embankment, the Montgomery County District Attorney's Office said.

Two passengers were pronounced dead at the scene. Prosecutors on Tuesday identified them as 20-year-old Marissa Kelly, of Stroudsburg, and 23-year-old Anthony Rodriguez, of East Elmhurst, N.Y.

The driver, 22-year-old Santone Santiago, a New York City resident attending school near Exton, was flown to Reading Hospital in critical condition.

Prosecutors said witnesses told investigators that the BMW was racing another vehicle at the time of the crash. The second car initially stopped, but then fled the scene.

That vehicle was described as a newer-model black Dodge Challenger that had tinted windows, bright headlights, yellow fog lights and a Delaware license plate.

Anyone with information can call Montgomery County Detectives at 610-278-3368 or West Pottsgrove police at 610-323-2090.