Orlando, Florida (CNN) -- Prosecutors can play tapes of 911 calls made by Florida murder suspect Casey Anthony's mother after she learned her granddaughter was missing, a judge ruled Thursday. Anthony's mother, Cindy Anthony, admitted during a hearing Thursday in Orlando that she had made exaggerated accusations about her daughter in those calls in a bid to get police to her home. But Circuit Judge Belvin Perry ruled that Cindy Anthony was trying to use calls to police as a "ploy" to get her daughter to tell her what she knew about the missing 2-year-old Caylee Anthony. Defense lawyers sought to have thrown out of court as hearsay, but Perry found the tapes were not being used to prove the facts of the case.
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NEW: A Florida judge has allowed the 911 tapes to stay in evidence
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Mother: I didn't want police thinking I was "some crazy grandmother"
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The defense argues that taped phone calls are hearsay and should not be admitted
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Prosecutors say calls are critical to their case against Anthony
@placeholder threatened to call the police, hoping it would force Casey Anthony to say where her daughter was.