NEW : ` ` It 's so upsetting , because he was so close , '' Castro 's neighbor says . DNA tests confirm that the alleged captor is the father of 6-year - old , he says . Authorities board up his Cleveland home to protect the crime scene , police say . The neighbor added that Castro 's yard was further obscured by tarps he put up , and trees . Castro is on suicide prevention in a 9-by-9 foot jail cell , spokesman says .
NEW : ` ` It 's so upsetting , because he was so close , '' Castro 's neighbor says . DNA tests confirm that the alleged captor is the father of 6-year - old , he says . Authorities board up his Cleveland home to protect the crime scene , police say . Castro is on suicide prevention in a 9-by-9 foot jail cell , spokesman says .