EOKA focused its activity to urban areas during this period. House bombings and riots, mostly by schoolboys, forced army to keep forces away from the mountains where EOKA's main fighters were hiding. Apart from individual citizens or soldiers in their leisure time, army and police facilities were attacked totaling 104 house bombings, 53 riots, 136 acts of Sabotage, 403 ambushes, 35 attacks on police, 38 attacks on soldiers and 43 raids on police stations. But as the pressure of Harding mounted, Grivas began targeting Turkish Cypriot policemen effectively sparking inter-communal riots and a series of strikes