WEST WINDSOR, Vt. — Vermont State Police are investigating a snowmobile crash that killed a 30-year-old woman from New York.

Police say Kristen T. Bednar of East Patchogue, N.Y., and a group of friends and relatives were riding snowmobiles late Tuesday night in West Windsor when she lost control of her machine and crashed into a tree. Bednar suffered severe head injuries and was flown to Dartmouth-Hitchcock Medical Center in Lebanon, N.H.

Police were informed Thursday night that Bednar had died as a result of her injuries.

Officials say Bednar was not wearing a helmet at the time of the crash. A passenger on the back of her snowmobile was not injured.