State police investigating fatal crash on I-95 in Lexington

State police are investigating the cause of a fatal crash on I-95 in Lexington early Wednesday morning.

Police said a 52-year-old man from Saugus was driving a tandem tractor trailer northbound on the interstate when, for reasons still under investigation, he lost control of the truck near exit 31, causing it to roll over onto its side.

The driver was transported with serious injuries to Lahey Clinic where he was pronounced dead, according to police. Police are withholding his name until his family has been notified.

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