Ala ud din Khilji  usurped  Delhi  from his father-in-law,  Jalal-ud-din Khilji , by killing him in cold blood. In  1299   Ala ud din 's  mongol  general Ulugh Khan sought to quell  Hindu  resistance in Gujarat  and besieged  Junagadh  and sacked the temple at  Somnath . Ulugh Khan had broken the