(CNN) -- DNA tests confirm that Ariel Castro is the father of a 6-year-old girl born to one of the three women he is accused of keeping in captivity for more than a decade, the Ohio attorney general's office said Friday. Castro's DNA did not match that from any other open Ohio cases, according to Dan Tierney, a spokesman for the attorney general's office. National results are pending through the FBI, he said. Amanda Berry's 6-year-old daughter was among those rescued Monday when Berry escaped from the home where police say she had been held since Castro allegedly lured her into his car on April 21, 2003.
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NEW: "It's so upsetting, because he was so close," Castro's neighbor says
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DNA tests confirm that the alleged captor is the father of 6-year-old, official says
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Authorities board up his Cleveland home to preserve the crime scene, police say
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Castro is on suicide prevention in a 9-by-9 foot jail cell, spokesman says
Meanwhile, questions continue to surround Knight, whose disappearance generated far less publicity and attention than did those of @placeholder and DeJesus.
@placeholder and DeJesus were released days ago and are now staying with relatives.