A man who kept his sister captive in filthy conditions inside their Connecticut home has been sentenced to 6½ years in prison.

Arthur Gauvin pleaded guilty in April to abuse and cruelty charges stemming from his treatment of the woman, who was found covered in urine and feces.

Police say the woman was suffering from diabetes and dementia and had been held captive for years. The windows on her room inside the home in Seymour were blacked out with paint.

The 60-year-old Gauvin was sentenced Thursday in Milford Superior Court. A plea agreement called for him to serve between five and 10 years in prison.

Police have said Gauvin was responsible for his sister's care and his motive was apparently related to a desire not to lose the house.