He and 150 members of his group ceased combat on November 8 , 1997 .
He and 150 members of his group took the amnesty offered by the government in September 1999 ( other members had already done so in December 1998 ) .
He and 150 members of his group ceased combat on November 8 , 1997 and took the amnesty offered by the government in September 1999 ( other members had already done so in December 1998 ) .