The Franklin County Coroner's Office is waiting for test results before releasing how a 3-year-old Pasco boy died Sunday.
The coroner's office expects to have the results in six weeks, said Chief Deputy Coroner Roy McLean.
Lucas Adams died inside a hot car at his house on the 300 block of Seabrook Court, officials said. Police have said they believe his death was an accident.
His parents are Brittany and Jason Adams of Pasco.