 Four HALO workers were killed in the subsequent effort to rid Mozambique of land mines, which continued to cause as many as several hundred civilian injuries and fatalities annually for years after the war.In September 2015, the country was finally declared to be free of land mines, with the last known device intentionally detonated as part of a ceremony.In mid-2013, after more than twenty years of peace, the RENAMO insurgency was renewed, mainly in the central and northern regions of the country.