He was the last sultan of the Dhiyamigili Dynasty; he was deposed while away on a pilgrimage,[2] and later, on his return trip he drowned,[3] or was murdered by Muhammad Shamsuddeen II.
The Sultan Muhammed Ghiya'as ud-din's reign was beset with many domestic troubles, which were coupled with a number of attacks by Malabars.
Although Dhon Bandaarain had treated Ghiyaasuddin with kindness, the new Sultan was denied the opportunity of reciprocating the same sentiments to the Huraage family.
He appointed his sister, Amina Kanbafaan, and her husband Ali Shah Bandar (Velaanaa Manikufaan) as dual regents.
Muhammed Manikufaan ascended the throne as Sultan Muhammad Shams ud-din Iskandar II.
He dismantled the residence of Sultan Ghiyaasuddin, impounded all the property to be found there and also all the land and waqf belonging to the members of the Dhiyamigili Dynasty.
After abdication, Sultan Muhammad Shams ud-din Iskandar II proclaimed himself Muhammed Faashanaa Kilegefaan.
Upon receiving the letter, the Sultan and Faashanaa Kilegefaan sent their troops and brought to Malé all Maldivians and men from Muscat who were with Ghiyaasuddin.
On the return of the boat to Malé, the people were informed that Ghiyaasuddin had disembarked and entered Ranjehi Gandavaru.
As the mob grew more vociferous, Muhammed Faashanaa Kilegefaan came out and said that the decree for the assassination was issued by the Chief Justice.