SEATTLE (AP) — Stansfield A. Turner, who served as CIA director under President Jimmy Carter and oversaw reforms at the agency after the Senate uncovered CIA surveillance aimed at American citizens, has died. He was 94.

Turner’s secretary, Pat Moynihan, confirmed to The Washington Post that Turner died on Thursday at his home in Seattle but Moynihan did not disclose the cause.

A Rhodes scholar and 33-year Navy veteran, Turner commanded NA- TO’s forces in southern Europe from 1975 to 1977 before being chosen to direct the Central Intelligence Agency.

Turner headed the agency from March 1977, shortly after Carter took office, through the end of Carter’s term in January 1981.

Turner promised at his Senate confirmation hearing to conduct intelligence operations “strictly in accordance with the law and American values.” He also said “covert operations must be handled very discreetly. People’s lives are at stake.”

A day later, the Senate unanimously confirmed his appointment.

As in recent years, questions of how to structure and oversee the nation’s vast military and civilian intelligence operations were a big issue in the 1970s.

The investigation of the CIA in 1975 and ’76 by the Senate committee headed by Sen. Frank Church had exposed CIA assassination plots, including the hiring of Mafia hit men in a failed bid to kill Fidel Castro, as well as CIA surveillance aimed at American citizens.