Pennsylvania state police are investigating a crash involving a car and a horse-drawn buggy in western Chester County yesterday that killed a young woman and seriously injured a 29-year-old man.

Police said the crash occurred shortly before 7 a.m. on Gap Newport Pike in West Fallowfield Township, near the Lancaster County line.

In a news release, Trooper Mark Knock said a Mitsubishi Eclipse driven by Robert P. Stanton Jr., 19, of Atglen, struck the buggy from the rear, ejecting all three occupants from the horse-drawn vehicle and fatally injuring the horse.

Killed was Rebecca Glick, of Gap, Pa., whose age was listed as 25 to 29. Police said Reuben B. Glick, also of Gap, suffered serious head injuries and was flown to Lancaster General Hospital. A third victim, J. Elmber Glick, 9 months, was treated at Alfred I. duPont Hospital for Children in Wilmington The release did not say how the victims were related.

Stanton, who suffered minor injuries in the crash, was treated at Lancaster General and released.