Other problems mentioned in the Mongoose-Canine Letter include the Tibetan government dividing the Tibetan guerrilla fighters in Mustang against themselves, which ultimately led to their destruction; and the role played by the Dalai Lama’s brother, Gyalo Dondrub, in illegal arms trading carried on by exile Tibetans between Taiwan, Pakistan and Burma. It is said that Losang Gyatso, the senior lama of the three monks who were murdered in Dharamsala in February 1997, had just returned from Taiwan carrying a very large amount of cash from one such arms sale, and that this money was a possible motive for the murders.