Three people were killed Monday evening in Montgomery County when a car collided with a snowplow, according to the county police and fire departments.

       One person was injured critically, said police spokeswoman Shiera Goff.

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       The crash occurred about 6:45 p.m. on Columbia Pike at Briggs Chaney Road in the White Oak/Burtonsville area of eastern Montgomery, according to fire department spokesman Pete Piringer.

       Initial accounts indicated that the car had run into the rear of the plow, Piringer said. Three people were extricated, he said.

       The auto may have been an SUV, Goff said.

       Details on the cause of the crash could not be learned immediately. No names or ages for the three people who died were available.