PHILADELPHIA CBS) — Police are investigating a fatal accident that shut down a section of Route 309 in Montgomery County.

It happened around 5 a.m. Sunday when authorities say a car struck and killed a pedestrian in the northbound lanes of the highway near the exit to the Pennsylvania Turnpike in Fort Washington.

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All of the northbound lanes were closed between Fort Washington and Highland Avenue for nearly three hours as a result of the crash.

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The cause of the accident is under investigation.

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