Traffic was backed-up for 10 miles Sunday after a multi-car crash on Interstate 17 near Rock Springs, about 15 miles north of Anthem, closed the northbound lanes, officials said. 

The crash forced the closure of the northbound lanes near milepost 242 shortly after noon, according to the Arizona Department of Transportation. Officials did not provide any additional details about the collision. 

The northbound lanes reopened at about 2:30 p.m., but traffic was still backed up with long delays Sunday afternoon.

Arizona Department of Transportation officials did not know when the traffic flow would return to normal.

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