The killing of a Turkish Cypriot policeman on 19 January, when a power station was bombed, and the injury of three others, provoked three days of intercommunal violence in Nicosia. The two communities targeted each other in reprisals, at least one Greek Cypriot was killed and the army was deployed in the streets.
On 22 October 1957 Sir Hugh Mackintosh Foot replaced Sir John Harding as the British Governor of Cyprus. Foot suggested five to seven years of self-government before any final decision. His plan rejected both enosis and taksim.
The Turkish Cypriot response to this plan was a series of anti-British demonstrations in Nicosia on 27 and 28 January 1958 rejecting the proposed plan because the plan did not include partition. The British then withdrew the plan.
The crisis reached a climax on June 12, 1958 when eight Greeks, out of an armed group of thirty five arrested by soldiers of the Royal Horse Guards on suspicion of preparing an attack on the Turkish quarter of Skylloura, were killed in a suspected attack by Turkish Cypriot locals, near the village of Geunyeli having being ordered to walk back to their village of Kondemenos.
An armed conflict was triggered after December 21, 1963, a period remembered by Turkish Cypriots as Bloody Christmas, when a Greek Cypriot policemen that had been called to help deal with a taxi driver refusing officers already on the scene access to check the identification documents of his customers, took out his gun upon arrival and shot and killed the taxi driver and his partner.
In the morning after the shooting, crowds gathered in protest in Northern Nicosia, likely encouraged by the TMT, without incident. On the evening of the 22nd, gunfire broke out, communication lines to the Turkish neighborhoods were cut, and the Greek Cypriot police occupied the nearby airport.
On the 23rd, a ceasefire was negotiated, but did not hold. Fighting, including automatic weapons fire, between Greek and Turkish Cypriots and militias increased in Nicosia and Larnaca. A force of Greek Cypriot irregulars led by Nikos Sampson entered the Nicosia suburb of Omorphita and engaged in heavy firing on armed, as well as by some accounts unarmed, Turkish Cypriots. The Omorphita clash has been described by Turkish Cypriots as a massacre, while this view has generally not been acknowledged by Greek Cypriots.
Further ceasefires were arranged between the two sides, but also failed. By Christmas Eve, the 24th, Britain, Greece, and Turkey had joined talks, with all sides calling for a truce.
On Christmas day, Turkish fighter jets overflew Nicosia in a show of support. Finally it was agreed to allow a force of 2,700 British soldiers to help enforce a ceasefire. In the next days, a "buffer zone" was created in Nicosia, and a British officer marked a line on a map with green ink, separating the two sides of the city, which was the beginning of the "Green Line". Fighting continued across the island for the next several weeks.
Grivas escalated the conflict when his armed units began patrolling the Turkish Cypriot enclaves of Ayios Theodhoros and Kophinou, and on November 15 engaged in heavy fighting with the Turkish Cypriots.
On June 26, 1984 the Turkish Cypriot leader, Rauf Denktaş, admitted on British channel ITV that the bomb was placed by the Turks themselves in order to create tension.
On 6 March, a Cypriot passenger jet was hijacked by Chechen sympathisers while flying toward Germany. Both of these incidents were resolved through negotiations, and the hijackers surrendered without any fatalities being inflicted.