After initial sporadic resistance, the PKI was paralyzed after the 1965-1966 killings. The party's leadership was crippled at all levels, leaving many of its former supporters and sympathizers disillusioned, leaderless and disorganized. The remnants of the party politburo issued a September 1966 statement of self-criticism, criticizing the party's previous cooperation with the Sukarno regime. After Aidit and Njoto were killed, Sudisman (the fourth-ranking PKI leader before October 1963) took over the party's leadership. He attempted to rebuild the party on a base of interlocking groups of three members, but made little progress before he was captured in December 1966 and sentenced to death in 1967.