Parents and a grandparent are charged after locking three children, aged 9 to 12, in an attic for two years while they starved, beat and forced cat to scratch them
Two boys, aged 11 and 12, and a nine-year-old girl were rescued by police in Minersville, Pennsylvania, last month
The children s father, Todd Richter, 32; his fiancé Jennifer Yost, 27; and her mother, Wendy Yost, 51, have all since been charged with child abuse
Police said they were alerted after the 12-year-old boy managed to escape the home and alert a stranger in early March
The children were allegedly locked in the attic for at least two years and deprived of food and water