WESTPORT — Authorities have narrowed their search for the vehicle connected to a near-fatal hit-and-run in Westport earlier this week.

The Bristol County District Attorney's Office says police now believe that the vehicle that struck a pedestrian was a gray BMW 3-Series sedan. The vehicle is likely an earlier model from 1999 through 2005, and likely sustained minor damage to its hood, front end, and possibly the front passenger side.

The driver of the suspect vehicle struck a 30-year-old Fall River woman as she was walking along Old Bedford Road in Westport on Tuesday evening. Witnesses say the driver stopped only to say that he was sorry before driving off at a high rate of speed. The vehicle was last seen in the area of Old Fall River and Faunce Corner Roads in Dartmouth.

The victim, Stephanie Tripp, remains in critical condition at Rhode Island Hospital.

Anyone with information on the suspect's vehicle, the suspect, or the incident is encouraged to call Massachusetts State Police Trooper Phil Giardino at 508-961-1928 or Westport Police at 508-636-1122. Anonymous tips can also be sent by texting the word "Bristol" followed by the information to CRIMES (274637) or by clicking here.