NEW : A team from the ATF will help investigate the blaze . The government is focusing on transporting the bodies of the victims . The theory that a mattress fire started the blaze is gaining ground . Comment:
NEW : A team from the ATF will help investigate the blaze . The government is focusing on transporting the bodies of the victims . The theory that a mattress fire started the blaze is gaining ground . An official says only 40 % of the inmates in the prison were actually convicted .