A woman serving life sentences for the antifreeze poisoning deaths of her Forsyth County firefighter boyfriend and her husband has died, officials said.

Lynn Turner, 42, was found dead at 6:55 a.m. Monday in her cell at Metro State Prison, a Georgia Department of Corrections spokeswoman said.

She said the cause of death is undetermined pending a report from the Georgia Bureau of Investigation Medical Examiner’s office.

Turner was convicted in 2007 for the 2001 poisoning death of her boyfriend, Forsyth County firefighter Randy Thompson, and sentenced to life without parole.

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