Naw Kham (C), head of an armed drug gang, is seen during a transferring at Laos' Vientiane Wattay International airport, May 10, 2012. Naw Kham, a drug lord suspected of masterminding the murder of 13 Chinese sailors on the Mekong River last year was transferred to Chinese police here on Thursday. [Xinhua/Thanakone]

Naw Kham (C), a drug lord suspected of masterminding the murder of 13 Chinese sailors on the Mekong River last year, waits to sign the arrest warrant in Beijing, capital of China, May 10, 2012. Naw Kham, head of an armed drug gang, was escorted to Beijing from Laos Thursday afternoon. [Xinhua/Wan Xiang]

Naw Kham, a drug lord suspected of masterminding the murder of 13 Chinese sailors on the Mekong River last year, signs on the arrest warrant in Beijing, capital of China, May 10, 2012. Naw Kham, head of an armed drug gang, was escorted to Beijing from Laos Thursday afternoon. [Xinhua/Wan Xiang]

Naw Kham (C, front), a drug lord suspected of masterminding the murder of 13 Chinese sailors on the Mekong River last year, is escorted to get off the plane in Beijing, capital of China, May 10, 2012. Naw Kham, head of an armed drug gang, was escorted to Beijing from Laos Thursday afternoon. [Xinhua/Wan Xiang]

Naw Kham (2nd R, front), a drug lord suspected of masterminding the murder of 13 Chinese sailors on the Mekong River last year, is escorted to get off the plane in Beijing, capital of China, May 10, 2012. Naw Kham, head of an armed drug gang, was escorted to Beijing from Laos Thursday afternoon. [Xinhua/Wan Xiang]