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LANHAM, Md. (WUSA9) -- Prince George's County officials are on scene of a single vehicle collision on I-495 that has slowed traffic along the inner loop.

Officials say a vehicle overturned and slid down an embankment at the ramp from Route 450 on to the inner loop of I-495. A female occupant of the vehicle has been removed and is being treated by paramedics.

The victim will be transported to a local trauma center.

Officials say it happened around 9:35 a.m. and a single lane is closed to traffic, including the Route 450 ramp.

Traffic is said to be backed up approximately 3 miles.

We'll update as more information becomes available.

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