Gunmen have reportedly attacked a group of Coptic Christians south of Cairo, Egypt, killing 26 and injuring 25. Reports say gunmen opened fire on a bus travelling from the Bani Suief province headed to a monastery in the Minya province. Local health officials said the attack happened while the bus was travelling to the St Samuel Monastery, about 140 miles south of Cairo. Sources claim 10 masked gunmen in military uniforms attacked the bus, thought to be carrying children. Arab TV stations have showed images of a damaged bus along a roadside, many of its windows shattered. Ambulances were parked around it as bodies lay on the ground, covered with black plastic sheets. An interior ministry spokesman said the attack was carried out by unidentified gunmen in three four-wheel-drive vehicles who opened fire on the victims' bus. Health ministry spokesman Khaled Mogahed said the death toll reached 26 but feared it could rise further. According to the Copts United news portal, only three children survived the attack.The provincial governor, Essam al-Bedaiwy, said the group was travelling in two buses and a truck through the province, which is home to a sizeable Christian minority. Eyewitnesses said the Copts were targeted as they were going to pray at the monastery of Saint Samuel the Confessor in the western part of the province. They said masked men stopped the vehicles on a road leading to the monastery and opened fire. Egyptian President Abdel Fattah al-Sisi has called a meeting of security officials in the wake of the deadly attack, the state news agency said.