The Philadelphia region's first commuter rail strike in 31 years was cut short Saturday after President Barack Obama intervened at the request of Pennsylvania's governor.

The strike at the region's transit system, Septa, began at 12:01 a.m. Saturday when 430 locomotive engineers and electrical workers walked off the job, following a multiyear contract dispute. The two sides have been at odds for more than four years over issues related to pensions and wages.

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