A jackknifed tractor trailer caused major traffic delays on Route 1 on Tuesday morning.
The accident occurred shortly before 10 a.m. on Route 1 south in Saugus, Massachusetts near the Lynnfield Tunnel.
Massachusetts State Police said the tractor trailer rolled onto the guardrail and was leaking fuel from its saddle tanks. A heavy duty tow truck was called in to remove the vehicle from the roadway.
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State police said all of the southbound lanes and one northbound lane were shut down for about two hours. All lanes reopened around noon.
No further information was immediately available.