PHILADELPHIA (CBS) — A fully-loaded car carrier that was transporting new cars caught fire Thursday morning, which led to major traffic delays on I-95 in Philadelphia.

The fire happened on I-95 northbound approaching the Philadelphia Airport right around Route 420. The Route 420 ramp getting on to I-95 was blocked.

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The fire is under control, but the backup from earlier in the morning, plus the usual morning rush, caused traffic problems in the area. There was also a gaper delay in the southbound lanes.

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The cause of the fire remains under investigation.

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