A woman gave birth to a baby boy on the Massachusetts Turnpike on Sunday.

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State police say they received a call Sunday night from a Framingham couple, saying the woman was in labor.

The couple had been driving east and pulled into a parking lot near exit 18.

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State police say troopers and Boston EMS responded. They were unable to get the woman to the hospital before she gave birth. State police say she delivered a baby boy in the back of an ambulance around 7:35 p.m. The woman and baby were then taken to Massachusetts General Hospital.

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State police say it was "excellent work by all involved."

They have not identified the couple.

No other information was immediately available.