Maryland State Police and Baltimore County firefighters Friday continue to work to clean-up a tractor-trailer accident on the outer loop of the Baltimore Beltway near Towson.

The 18-wheeler jack knifed in the right lane of Interstate 695 westbound near the Charles Street Bridge at about 11:41 a.m., according to state police.

Hazardous material teams were called in to address a hydraulic fluid leak.

Only the fast lane remained opened as of 12:50 p.m.

The condition of the driver is not known.

The accident remains under investigation.

Stay with Patch as we continue to update this story.

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Correction: The original version of this article stated that the accident was reported at 11:41 p.m. The story has changed to reflect the accurate time of the accident as 11:41 a.m.