AN alleged gang leader wanted by the United States Government on a count of conspiracy to murder lost his battle against extradition yesterday. After Magistrate Li Zong-er ruled that there was sufficient evidence to put Stephen Tse Chun-on, 44, on trial in the US, Tse was transferred to the custody of the Correctional Services Department for extradition. However, Tse has 15 days to apply in the High Court for a writ of habeas corpus against the move. He is accused of conspiring to murder Dai Keung and Chao Va-meng in Boston on December 29, 1988. Counsel for the US Government, Roger McMeans said Tse was the leader of the Ping On gang, wanted by the Massachusetts District Court in connection with a gunfight. The court heard Tse discovered two members of a rival gang, Dai and Chao, had challenged his gang's territory by attempting to collect US$30,000 from Ping On member Albert Cheung in Tse's restaurant, Kung Fu. Cheung's affidavit states Tse asked his lieutenant, Michael Kwong, to bring out automatic weapons for Ping On members Jimmy Soo and Chan Kwok-wah to kill Dai and Chao. No one was seriously wounded.