SIDNEY – New York State Police have concluded their investigation into the motor vehicle accident which killed Trooper Jill E. Mattice in January, finding the cause to be “driver inattention.”

On Jan. 20, 2010, Trooper Mattice was traveling east on State Route 23 in Morris in a marked state police vehicle, en route to the Oneonta barracks from her assigned duty as a School Resource Officer at the Unadilla Valley High School.