Published: May 22, 2013 3:25 PM EDT

MIAMI (AP) - A Miami man charged with fatally beating his adoptive daughter says audio cassettes that could help his care are being withheld.
But Jorge Barahona doesn't explain in a two-page letter to the judge exactly how the recordings he made of conversations between his adoptive foster daughter and son could help. He says one of the tapes records him calling a state-appointed guardian who monitored the children.
The Miami Herald ( reports prosecutors haven't heard the tapes.
Jorge and Carmen Barahona have pleaded not guilty to first-degree murder. Nubia Barahona's body was found partially decomposed in the back of Jorge's truck in 2011. Her brother survived, but was badly burned after being doused with a toxic chemical.
A trial date has not been set. The state is seeking the death penalty.
Information from: The Miami Herald,

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