ATHENS — Nikolaos Dertilis, the last jailed member of the military dictatorship that ruled Greece from 1967 to 1974, died Monday. He was 94.

Mr. Dertilis had heart problems after suffering a stroke.

As a colonel, Mr. Dertilis was among a group of middle-ranking officers who seized power in a bloodless coup on April 21, 1967. The dictators imposed martial law and cracked down on political opponents.

Mr. Dertilis was sentenced to life in prison for the execution of a youth during the bloody suppression of a student uprising in 1973.