14-year-old girl killed in hit-and-run in West Philadelphia, dark-colored sedan suspect sought.

A 14-year-old girl was killed in a hit-and-run in West Philadelphia while crossing Haverford Avenue with her mother on Thursday night. The driver of a dark-colored sedan, possibly a Mercedes, struck her and fled the scene. The girl was pronounced dead shortly after the incident, and the police are actively searching for the vehicle and reviewing surveillance footage. The investigation is ongoing, and authorities encourage anyone with information to come forward.