Update, 8:30 p.m.:
The crashed vehicle has been moved enough for single-lane traffic to pass. Cars are moving again.
Check back for updates.
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North- and south-bound traffic has ground to a halt on Pemberton's Suicide Hill after a large vehicle rolled over, blocking both lanes.
Traffic is currently backed up to Nairn Falls.
Officials say several other small vehicles are involved. It is unclear whether there are any injuries or fatalities. Police, ambulances and paramedics are on the scene.
The large, flipped vehicle will take several hours to drag away, according to one official. A tow truck is not yet on-the-scene.
Check back with Pique for more as this story develops...