BOSTON (WHDH) - Massachusetts state police are investigating a single-vehicle crash in the Sumner Tunnel that left one person dead and two people hospitalized Sunday morning.

Troopers responding to a reported crash on the ramp leading from the Sumner Tunnel to Storrow Drive around 3:20 a.m. found three people inside the car suffering from serious injuries, according to Massachusetts state police.

The driver, Michael Lap, 24, of Northampton, was pronounced dead at the scene.

The passengers, an 18-year-old woman and a 22-year-old man, were taken to Massachusetts General Hospital with serious injuries, police said.

The cause of the crash remains under investigation.

No additional information was immediately available.

This is a developing story; stay with 7NEWS on-air and online for the latest updates.

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