as King Henry II rebuilding the chapel in the 14th century. The minaret of the mosque was also converted to the bell tower of the cathedral. It was adorned with Santiago de Compostela’s captured cathedral bells. The most significant alteration was the building of a Renaissance cathedral nave right in the middle of the expansive structure. The insertion was constructed by permission of Charles V, king of Castile and Aragon. Artisans and architects continued to add to the existing structure until the late 18th century. Current Muslim campaign Some Muslims across Spain are lobbying the Catholic Church to allow them to pray in the cathedral. The Islamic Council of Spain had lodged a formal request with the Vatican for Muslims to be allowed to pray in the church. Spanish church authorities oppose Muslim prayer at the cathedral. Zakarias Maza, the director of the Taqwa mosque in neighbouring Granada stated in 2004: "We hope the Vatican will give a signal that it has a vision of openness and dialogue. It would be good if there were a gesture of tolerance on their part. The church council doesn't seem to be open to dialogue." "In no way is this request about reclaiming our rights — far less any kind of reconquest," stated Isabel Romero, a member of the Islamic Council of Spain in 2004. "Instead, we want to give our support to the universal character of this building". Rosa Aguilar, then mayor of Córdoba for the United Left, expressed support for the Islamic Council's position. On Christmas Day 2006, a Spanish Muslim organisation called the Spanish Islamic Board, sent a letter to the Papal nuncio to Spain, asking Pope Benedict XVI for permission for Muslims to worship alongside Christians in the building, noting that they did not intend to take control of the building or "recover a nostalgic Al-Andalus". In 2004, the Vatican's Pontifical Council for Inter-religious Dialogue had rejected a similar request from the same group. The general secretary of the Spanish Islamic Board, Mansur Escudero, said that security guards often stop Muslim worshippers from praying inside the building. 2010 Muslim praying incident In April 2010, two Muslim tourists were arrested at the cathedral, after an incident in which two security guards were seriously injured. The incident occurred when the building was filled with tourists visiting the cathedral during Holy Week. According to cathedral authorities, when half a dozen Muslim citizens