NEW : Kevin Harpham , 36 , who lived alone in a rural mobile home , is ordered held without bail . A man accused of killing his wife and her two children was found dead inside the family's trailer on Saturday morning after he allegedly shot himself to death with an AR-15 rifle. A backpack bomb was found along a Martin Luther King Jr. parade route in Spokane .
NEW : Kevin Harpham , 36 , who lived alone in a rural mobile home , is ordered held without bail . He faces two charges , including trying to use a weapon of mass destruction . A backpack bomb was found along a Martin Luther King Jr. parade route in Spokane .