Charles Colson, the man known as the "evil genius" behind former President Richard Nixon's administration and a key figure in the Watergate scandal, died Saturday at age 80, according to the Associated Press.

Colson reformed himself into a Christian evangelical before going into prison for seven months after pleading guilty in 1974 for sending Nixon's plumbers into the office of Daniel Elsburg, the man who leaked the Pentagon Papers on Vietnam, in order to discredit him. He would began helping inmates with turning around their lives and created the Prison Fellowship Ministries in 1976.

"The Prison Fellowship and Colson Center for Christian Worldview founder died at 3:12 p.m. on Saturday from complications resulting from a brain hemorrhage,"  Colson's website said.