Firishta's History (Gulshan-i Ibrāhīmī) 226.4

226.4

Upon this occasion Alla-ood-Deen, the younger brother, fled to his father’s palace; and Nasir-ood-Deen, following him closely, put him to death, as well as all his children and the whole of his family. Having then assumed the reins of government, he was formally crowned, and in a few days after his father was found dead in the seraglio; and it was supposed that poison had been administered to him by order of his son. Thus died Sooltan Gheias-ood-Deen, after a reign of thirty-three years.