An upstate New York man has admitted he stuffed his 98-year-old dead mother in a freezer so he could keep cashing her Social Security checks.

State police discovered Herta Auslander's body in a freezer in October after receiving a tip she'd died more than a year earlier. An autopsy concluded she died of natural causes.

Prosecutors say 69-year-old Rosland Auslander kept his mother in the freezer for at least 18 months at his home in the hamlet of Cooks Falls, about 100 miles northwest of New York City. After eluding capture for months, he was arrested at his home in March.

Auslander pleaded guilty to grand larceny and forgery charges in Sullivan County court Friday. He could face up to seven years in prison at his October sentencing.