The Arizona Department of Public Safety says a trooper was taken to the hospital after a crash on the Loop 101 early Friday morning.
The crash in the northbound lanes at 90th Street in the Scottsdale area involved four vehicles.
DPS says a trooper stopped to assist a motorist when the crash occurred.
Video from the scene showed several vehicles blocking multiple lanes and the trooper's car with extensive rear-end damage. Fortunately, DPS says the trooper's injuries do not appear serious.
Four left lanes were blocked for several hours, causing a traffic jam for northbound drivers.
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