kuala lumpur one month trial kill north korean leader kim jong un half-brother malaysian prosecutors focus two accuse women shed light four prime north korean suspect historically close tie north korea malaysia unravel southeast asian country start investigate allege murder kim jong nam die two women smear face vx ban chemical weapon kuala lumpur airport feb. 13. malaysian police declare two women indonesian siti aisyah doan thi huong vietnam four men flee north korea prime suspect police secure interpol alert four men identify north koreans ri ji hyon hong song hac jong gil ri jae nam photos passport detail widely distribute among media organizations trial enter fourth week prosecutors yet name four men even confirm north korean origin court case lead police investigator wan azirul nizam che wan aziz refer suspect pseudonyms trial say authorities enough information trace arrest base investigation suspect use assume name identify detail passport number telephone number wan azirul tell court kim jong nam relationship north korea leader barely mention throughout trial witness lawyers alike refer victim kim chol accord name north korean passport prosecutors make mention south korean intelligence source describe state-sponsored plot kill kim jong nam live exile macau south korean u.s. officials say kim jong un regime behind kill pyongyang vehemently deny question victim relate relevant try determine motive prosecutors want avoid prove conspiracy involve head state foreign government shad saleem faruqi law professor kuala lumpur-based university malaya broad cast net difficult job become say malaysia north korea come close snap tie case swap deal agree upon march 30. three north koreans want question kill allow return home along kim jong nam body nine malaysians bar leave pyongyang release defense lawyers say siti aisyah huong arrest kuala lumpur within days kill dupe think play prank reality tv show know poison kim jong nam cctv record screen court outskirts kuala lumpur show four suspect know mr. chang mr. jam hanamori airport morning kill hanamori go name grandpa uncle orchestrate operation airport wan azirul say two see meet siti aisyah huong change clothe leave scene kim jong nam attack mr. chang mr. apply liquid women hand wan azirul say trial resume monday cctv footage expect show defense team expect focus four north koreans judge call present case two women face mandatory death sentence hang find guilty month trial north korean 'masterminds behind kim jong nam kill mystery