Leo Ryan was killed one day before the Jonestown mass suicide .
He was also famous for vocal criticism of the lack of Congressional oversight of the Central Intelligence Agency ( CIA ) , and authored the Hughes–Ryan Amendment , passed in 1974.Ryan was shot to death in Guyana by members of the Peoples Temple in November 1978 , just hours prior to the Jonestown mass suicide and 11 days after he was re-elected for a fourth term .
Leo Ryan