Kierra Coles went missing in October 2018, and her family hasn't stopped looking.
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Police said the missing person case is still classified as high-risk, with foul play suspected.
"I have been here and I will not go anywhere," said Coles' father, Joseph Coles.
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Coles was three months pregnant when she disappeared.
"I am still going to hold out hope until they put something in front of me that says she is not here anymore." he said.
The family said they were shocked to find out that Chicago police have suspended the investigation.
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"The case is classified as suspended, meaning the case cannot proceed further at this time. That can happen for a variety of reasons, including detectives exhausting all leads at this time. It is not a permanent status and it can be changed if more information is made available," police said in a statement.
RELATED: Search continues for missing pregnant postal worker Kierra Coles
Police said the case cannot proceed further at this time because detectives have exhausted all leads, among other variables, but it could change as more information is available.
"We need to find out some answers today," Joseph Coles said.
The surveillance video taken the day of the disappearance near 81st and Vernon was reportedly the last time Coles was seen.
The recording shows a woman in a postal worker uniform walking in the Chatham neighborhood, where Coles lived.
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Coles' family said the woman in the video was not Kierra.
"Coming from the horse's mouth, that is not her walking across that video. I asked them several times to take that down," Joseph Coles said.
Kierra's mother said she knew the video was not of her daughter after only one look.
Chicago police said they are looking into those claims.
"Happened to be someone who lived across the street who had a postal uniform on," said Karen Phillips, Kierra's mother.
"I do believe that she is out there somewhere. It is just a matter of someone opening their mouth," Joseph Coles said.