sentences:  In recent years, Tunku Ibrahim gradually took over some of the state duties and functions from his aging father; these included the 211th Conference of Rulers, whereby Tunku Ibrahim and Tengku Abdullah, the Tengku Mahkota of Pahang represented their fathers in the meetings, among some other state functions.A few hours before his father's death on 22 January 2010, Tunku Ibrahim was appointed as the Regent of Johor, following medical reports that suggested of Sultan Iskandar's pending demise.Sultan Iskandar died on the same night, and Tunku Ibrahim was installed as the Sultan of Johor the following morning.