Police say Trooper John Basler was issued citations Friday over the crash that killed 64-year-old Susan Macchi and 23-year-old Juliet Macchi on Sunday. Susan Macchi, of Carver, was pronounced dead at the scene. Juliet Macchi died at a hospital.
Basler, of Kingston, was off-duty at the time of the crash.
Police say Basler will also be charged with carrying a firearm while under the influence.
A message left for Basler’s attorney was not immediately returned Saturday night. A state police spokesman wasn’t immediately available.
Plymouth police Chief Michael Botieri says the crash is still under investigation and more charges may be filed.