Six men accused of murdering 13 crew members of two Chinese merchant ships on the Mekong River last year pleaded guilty Sept. 20 at their trial in Kunming, capital of China's Yunnan province. The defendants included Naw Kham (also rendered Nor Kham), purportedly one of the most powerful warlords in the Golden Triangle opium-growing region that straddles the borders of Burma, Thailand and Laos. The crew were massacred by an armed gang that attacked two cargo ships last October. Chinese media said the gang was involved in kidnapping as well as international drug running.