Cartha "Deke" Deloach was the deputy director of the Federal Bureau of Investigation

Federal Bureau of Investigation

The Federal Bureau of Investigation is an agency of the United States Department of Justice that serves as both a federal criminal investigative body and an internal intelligence agency . The FBI has investigative jurisdiction over violations of more than 200 categories of federal crime...

 (FBI) of the United States, and the third most senior official in charge of the FBI after Hoover.

Deloach joined the FBI in 1942 and in 1965 J. Edgar Hoover

J. Edgar Hoover

John Edgar Hoover was the first Director of the Federal Bureau of Investigation of the United States. Appointed director of the Bureau of Investigation—predecessor to the FBI—in 1924, he was instrumental in founding the FBI in 1935, where he remained director until his death in 1972...

 promoted him to deputy director of the FBI. DeLoach was involved in the investigation of the assassination of John F. Kennedy and in a memo sent to Clyde Tolson

Clyde Tolson

Clyde Anderson Tolson was Associate Director of the FBI, primarily responsible for personnel and discipline. He is best known as the protégé of FBI Director J. Edgar Hoover.-Early career:...

, DeLoach claimed that President Johnson "felt the CIA had something to do with the plot" to kill President Kennedy.

In 1975 he wrote a book Hoover's FBI.