When Grivas Digenis died from heart failure on 27 January 1974, the post-Grivas EOKA-B increasingly came under the direct control and influence of the military junta in Athens. EOKA-B was on the verge of dissolution by July 1974. Yet on July 15, 1974 the Greek dictator Dimitrios Ioannides used the National Guard which was led by Greek officers and consisted of Greek-Cypriot conscripts, and EOKA-B to launch a military coup. EOKA-B attempted to assassinate Makarios but failed, and he fled to London. Nikos Sampson was installed as the new president of Cyprus.