Police are investigating the cause of a single-vehicle accident in the 8200 block of Waterford Road in Pasadena early Wednesday that left a 53-year-old Severna Park woman seriously injured.

Mary Elizabeth Hughes of the 900 block of Old County Road was driving a 2011 Hyundai Sonata south on Waterford Road around 1 a.m. when the car left the roadway for unknown reasons, vaulted into the adjacent woods, struck multiple trees and overturned, police said.

Hughes, who was transported to Maryland Shock Trauma Center, was found resting outside of the car near Lake Waterford Park with significant injuries when officers arrived, police said.

A preliminary investigation did not determine whether alcohol was a factor in the wreck.

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