SCHROEPPEL, N.Y. (AP) — Authorities are still trying to figure out why a man apparently deliberately drove the wrong way on a central New York highway before crashing into two other vehicles, killing himself and twin sisters on a Christmas shopping trip.

State police say 68-year-old Bruce Drury of Syracuse drove the wrong way for seven miles on state Route 481's southbound lanes on Monday morning, at one point serving around a trooper who had parked his cruiser in Drury's path in an effort to stop him.

Soon after Drury's car slammed into two other vehicles in Schroeppel (SCROO'-puhl), north of Syracuse. Drury and two passengers in the first vehicle struck, 69-year-old sisters Louise Porter and Linda Robillard, were killed. Porter's husband was injured.

Troopers say it didn't appear Drury had suffered a medical emergency. Toxicology test results are pending.

[STORY BY: THE ASSOCIATED PRESS]

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