Father charged with murder after 9-month-old son's overdose MNPD/WTVF and last updated 2021-01-21 23:07:25-05 NASHVILLE, Tenn. (WTVF) â A man was indicted on charges of first-degree murder and aggravated child abuse in his 9-month-old son's overdose death. In October 2019, 9-month-old Kayden Goldthreate overdosed on fentanyl, according to Metro Nashville Police. And on Thursday, a grand jury indicted his father, 36-year-old Phuoc "Tommy" Nguyen, on the charges Police found that Nguyen was a heroin user and that the child ingested heroin/fentanyl while in his custody at a residence on Willow Branch Drive. Doctors at Monroe Carell Jr. Children's Hospital at Vanderbilt also found Kayden to be suffering from head injuries. An autopsy determined Kaydenâs cause of death to be acute fentanyl toxicity.