From October 1928 onward, Mufti Amin al-Husayni organised a series of measures to demonstrate the Arabs' exclusive claims to the Temple Mount and its environs. He ordered new construction next to and above the Western Wall. The British granted the Arabs permission to convert a building adjoining the Wall into a mosque and to add a minaret. A muezzin was appointed to perform the Islamic call to prayer and Sufi rites directly next to the Wall. These were seen as a provocation by the Jews who prayed at the Wall. The Jews protested and tensions increased.