A tanker and a lorry have collided on a motorway on the outskirts of the northern Italian city of Bologna, causing a major fire and explosion.
Images released by police show the tanker ploughing into the back of the lorry that had come to a stop in motorway traffic.
They then caught fire, triggering a huge fireball, and the bridge they were on partly collapsed.
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Two people have died and at least 55 have been injured, Italian media say.
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