Regency
Kamal Khan Deccany had been a noble of the court of Sultan Mahmud Shah Bahmani II before joining Yusuf Adil Shah's service, rising through the office of Meer Nobut and distinguished gallantry against Timraj to become prime minister. On his deathbed Yusuf Adil Shah "enjoined him to become regent during the minority of his son," and the other officers of the court "respected Kumal Khan as their superior, and leaving all affairs to direction obeyed him as regent."
As regent, Kamal Khan restored the public exercise of Sunni practice, made peace with the Portuguese over Goa, and redistributed the jageers of dead or convicted officers to his own dependents, steadily concentrating power in his own hands.
Emboldened by the example of other Deccan usurpers — Timraj at Vijayanagara and Qasim Barid at Bidar, whose name had been read in the khutba in place of his king's — Kamal Khan struck a secret pact with Ameer Bereed: Bereed's support for Kamal Khan's claim on the Bijapur crown in exchange for Kamal Khan's support of Bereed's claim on Ahmadnagar, with Bijapur territory and Sholapur ceded between them; he was given authority, per that agreement, that let him "depose, or even put to death, Ismael Adil Shah." He imprisoned Ismail and his mother Booboojee Khanum in the citadel of Bijapur while pursuing the Sholapur campaign, then purged the palace's foreign troops from three thousand to three hundred, on pain of death, and convened his partisans on 1 Suffur A.H. 917 (29 April 1511) to fix an auspicious day — the first of Rabi al-Awwal — for formally deposing Ismail and taking the throne.
Fall and murder
The plan reached the queen-mother, who fed Kamal Khan's own spy a plausible errand and had her old retainer Yoosoof Toork admitted to the regent under cover of ceremonial leave-taking. Approaching to receive the parting pan from Kamal Khan's own hand, Yoosoof "with the quickness of lightning, drawing a dagger concealed beneath the cloth, stabbed Kumal Khan in the breast with all his force, so that he fell down and expired immediately with a loud groan"; the attendants then cut Yoosoof and the old female intermediary to pieces on the spot.
Kamal Khan's mother, described as "a woman of masculine spirit," tried to conceal the death and had his son Sufdur Khan attempt to seize the young king and the citadel by force; in the ensuing fighting Sufdur Khan was killed (an arrow through the eye, then crushed by a stone the king himself rolled from the terrace), and the regent's partisans dispersed once his own death became known. Ismail Adil Shah then took the throne in his own right; letters were sent to neighbouring states announcing the regent's death and the king's "fortunate emancipation."