Ali Ridha Pasha (also Ali Riza Pasha) led the Ottoman army in 1831 against the mamluk governor in Baghdad after Dawud Pasha refused to relinquish his office. Ali Ridha Pasha captured the city and Dawud ending the mamluk rule in Baghdad. Baghdad fell in September 1831 after a ten-week long blockade of the city which caused mass famine. Ali Ridha Pasha appointed ‘Abdu’L-Wahhab in charge of the city of Baghdad. In 1842 after eleven years of governing Ali Ridha Pasha was replaced by Muhammad Najib Pasha. Ali Ridha Pasha was transferred from Baghdad to Syria.