India, July 6 -- Authorities in Ohio say they had no idea 16 children were living inside a home in Vinton County until deputies arrived to serve an unrelated warrant last week.

Officers found children ranging in age from 18 months to 18 years allegedly living in a 12-by-12-foot room inside the house. Four adults have since been arrested and face multiple child endangerment charges.

Sheriff's deputies went to the Vinton County home in Hamden, a village of about 700 people, on Tuesday to serve a warrant for a "parallel case" involving one of the four adults living there. Investigators were not prepared for what they found, 16 children, ranging in age from 18 months to 18 years, living in a small room of a five-room, one-bathroom home.

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