Cormier obtained a search warrant to collect swab samples from Monteiro, and on Wednesday evening, she was notified that the DNA found on Christine's pants matched Monteiro's. He was arrested that same night.

Monteiro denied ever knowing Christine and said he wasn't responsible for her disappearance and death, according to the affidavit.

Monteiro was arraigned Thursday in district court in Providence. He has not yet entered any pleas and is being held without bail, court records show. ABC News has reached out to Monteiro’s attorney, but there was no immediate comment.

Late Friday, Monteiro was released after posting $5,000 bail, according to ABC News Providence, R.I. affiliate WLNE.

\"PHOTO:
Courtesy Pawtucket Police Dept.
PHOTO: Christine Cole disappeared shortly after her 10th birthday in 1988 near her home in Pawtucket, R.I.
>

While announcing the arrest at a press conference Thursday, Cormier told reporters that Christine was likely in the wrong place at the wrong time because, so far, there doesn't appear to be any connection between her and Monteiro.

\"I'm going to continue to work on this,” the detective said. “I hope that this is a message to the people that are responsible for these crimes that we are coming for you, and we're not giving up.”

ABC News' Ben Stein contributed to this report.

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