MARTIN COUNTY, Fla. (CBS12) — A major crash involving a jackknifed semi-truck has blocked all northbound lanes of Florida’s Turnpike in Martin County on Friday afternoon.

The crash was reported on Florida’s Turnpike North between mile markers 122 and 125. Photos from the crash show two fire engines at the scene and Florida Highway Patrol troopers.

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The cause of the crash and whether anyone was injured remain unclear. Drivers should expect delays in the area as the situation develops.