Muslims and Christians share a common history and national identity; however, at times religious tensions have arisen, and individual acts of prejudice and violence occur. The most significant was the 2000–2001 El Kosheh attacks, In which Muslims and Christians were involved in bloody, inter-religious clashes following a dispute between a Muslim and a Christian. "Twenty Christians and one Muslim were killed after violence broke out in the town of el-Kosheh, 440 kilometres (275 miles) south of Cairo." In 2005, in Kafr Salama village, Sharqiya governorate, an altercation between a Muslim and a Christian resulted in the death of the Muslim. Muslim villagers later attacked the Abu Sifin Church and several Christian homes and looted several shops before the authorities restored order. In 2006, one person, described by police as drunk and mad, attacked three churches in Alexandria, leaving one dead and from 5 to 16 injured, although the attacker was not linked to any organisation. On January 7, 2010, Muslim gunmen open fire on Christian worshipers leaving a church in Nag Hammadi resulting in the murder of nine Coptic Christians.