PHOENIX (AP) " The Latest on the deadly shooting of a 9-year-old Phoenix boy (all times local):
A couple charged with murder in their 9-year-old son's shooting death had been investigated by Arizona's child-welfare agency nearly three years ago.
The Department of Child Safety says it launched the investigation after Wendy Lavarnia gave birth to a child who had been exposed to methadone and heroin.
The children were eventually put in foster care for a year before being reunited with their parents.
Wendy and Kansas Lavarnia are accused of first-degree murder in the death of their son, Landen. They haven't been charged yet.
The mother told police her 2-year-old son found a gun left on a bed Monday and accidentally shot his brother.
Police became suspicious of the mother's story when they found inconsistencies in her account.
This story has been automatically published from the Associated Press wire which uses US spellings