By CBS Baltimore Staff

BALTIMORE (WJZ) — Two Maryland troopers were hurt Thursday when their vehicles were struck by a driver on Interstate 270.

The crashes happened about 6:15 p.m. on southbound I-270 near Montrose Road in Rockville, Maryland State Police said in a Friday news release.

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Troopers investigating calls about a possible impaired driver parked their patrol vehicles on the shoulder with their lights switched on. Moments later, both were struck by a Chevrolet Impala.

The troopers and the driver, identified as 59-year-old Kevin Junghans of Frederick City, were taken to a hospital. The troopers were treated and released.

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The status of the driver was not immediately clear Friday morning.

Based on a preliminary investigation, troopers suspect the 59-year-old might have been under the influence of drugs, police said.

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Charges are pending the outcome of the investigation into the cause of the crash.

CBS Baltimore Staff