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WASHINGTON (WUSA9) -- A person has been transported to a hospital with life-threateninginjuries after a vehicle was reported to have struck a tree after going off the roadway on Baltimore Washington Parkway, police said.

The incident occured around 2:30 p.m. on Wednesday when the vehicle went into the wood line in the median at Route 197 and struck a tree, police said.

All northbound lanes are open but only one lane on southbound is open. The accident is still under investigation, police said.