Jesse Johansmeyer, 19, of Burts Pit Road, died the next morning at Baystate Medical Center after doctors couldn't save his life, the Northwestern District Attorney's Office said.
Johansmeyer was run over around 11:30 p.m. on Friday while attending a bonfire in a remote area called the Hatfield Meadows off Great Neponset Road and South Street near the Connecticut River, officials said.
A white pickup truck slammed into him before driving away. Police are asking the public to help track down the driver.
Hatfield Police are investigating the crash with the Northwestern DA's Office and State Police.
Police ask anyone with information to contact investigators at 413-247-0323.
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