certain they poisoned him . '' Kim Chang-hwan believes her husband was murdered for helping North Korean to defect . Her husband , Kim Chang-hwan , was found dead in a Chinese town across the Chinese border . Hospital officials said Kim Ha-young had committed suicide by swallowing pesticides . A blood sample tested in North Korea found high levels of a poison to kill a person .
Kim Chang-hwan believes her husband was murdered for helping North Korean to defect . Her husband , Kim Chang-hwan , was found dead in a Chinese town across the Chinese border . Hospital officials said Kim Ha-young had committed suicide by swallowing pesticides . A blood sample tested in North Korea found high levels of a poison to kill a person .