Aminuddin Harun

2026 Negeri Sembilan constitutional and political crisis

On 17 April 2026, Aminuddin announced that Dato' Haji Mubarak bin Dohak was removed from his office as Undang of Sungei Ujong, with effect from 13 May 2025, for 33 alleged offences relating to traditional and customary laws.^[5][6] This announcement came after a special session of the Hall of Justices and Undangs (Dewan Keadilan dan Undang, DKU) chaired by Yang di-Pertuan Besar of Negeri Sembilan, Tuanku Muhriz advised the Luak of Sungei Ujong to accept Mubarak's removal, in which the Klana Hulu of Sungei Ujong's Clan Matriarch (Ibu Suku) and her immediate family (Anak Waris) were also in attendance.^[5][6][7]

On 20 April at the Balai Undang Luak Sungei Ujong, Dato' Mubarak and the other three Undangs, namely Dato' Hj. Maarof bin Mat Rashad of Jelebu; Dato' Hj. Muhammed bin Abdullah of Johol; and Dato' Hj. Abdul Rahim bin Yasin of Rembau declared the removal of Tuanku Muhriz on claims of alleged misconduct and named Tunku Nadzaruddin, the Tunku Panglima of Negeri Sembilan and third son of Muhriz's predecessor Tuanku Ja'afar, as the 12th Yang di-Pertuan Besar. Aminuddin rejected the declaration on the grounds that Dato’ Haji Mubarak, who signed and read the declaration, no longer held any authority as Undang having not received the mandate from the Klana Hulu's Clan Matriarch and her family.^[5][7][8] On the following day, the four Undangs claimed that Mubarak's removal was not valid as the DKU members who were present during the special session did not make a decision on the matter and that the other three Undangs did not agree with Mubarak's removal.^[9][10] On the following month, two individuals, 29-year-old accountant Muhammad Faris Johari^[11][12] and 70-year-old former clerk Abd Rahman,^[13][14] were appointed as the 11th Undang of Sungei Ujong. Muhammad Faris' appointment was officially announced whereas Abd Rahman's was not. Both appointments were respectively disputed.

On 27 April, UMNO withdrew their support to Aminuddin, citing that he did not consult UMNO over the dispute between the Undangs and Muhriz. Negeri Sembilan UMNO later announced that they have accepted Perikatan Nasional's collaboration and have a simple majority to form a new state government. Aminuddin said that he was informed by Tuanku Muhriz to continue his duty as Menteri Besar until there is resolution over the matter.^[15][16] Prime Minister Anwar Ibrahim reaffirmed Tuanku Muhriz's stance after being granted an audience^[17] and also said that a state snap election is unlikely to happen.^[18] On 30 April, the 14 UMNO assemblymen reaffirmed their support to Aminuddin to ensure political stability.^[19] However, the state assembly was dissolved on 5 June with the consent of Tuanku Muhriz.^[20]

On the same day, Tunku Nadzaruddin was proclaimed as the 12th Yang di-Pertuan Besar by Undang Luak Jelebu Maarof Mat Rashad, who represented the other three Undangs, at Park Royal A'Famosa Resort, Melaka. The ceremony took place after police obstructed Tunku Nadzaruddin from leaving the resort to head to the Tuanku Besar Tampin official residence for the ceremony.^[21][22] Immediately after, Anwar announced that the federal government still recognises Tuanku Muhriz as the rightful Yang di-Pertuan Besar and that constitutional disputes must be resolved through lawful and established channels.^[23]

Honours of Malaysia

• Malaysia
  • Recipient of the 17th Yang di-Pertuan Agong Installation Medal (2024)
• Negeri Sembilan
  • Principal Grand Knight of the Order of Loyalty to Negeri Sembilan (SUNS) – Dato' Seri Utama (2024)^[32]
  • Knight Grand Companion of the Order of Loyalty to Negeri Sembilan (SSNS) – Dato' Seri (2019)^[33]