On 20 June 1991, during the opening ceremony of the
Johor State Legislative Assembly at Dewan Tun Abdul Razak of the
Sultan Ibrahim Building, the
Sultan of Johor,
Sultan Iskandar, punched and slapped Pang Hok Liong and Wong Peng Seng, who were both DAP members and Johor state assemblymen at the time. This was soon followed by another assault from the then-Crown Prince of Johor,
Ibrahim Iskandar (now Sultan of Johor and the 17th
Yang di-Pertuan Agong), who kicked Pang in his legs. The incident was confirmed by the DAP central committee but no police report was ever made. It only came to public light during the
1993 constitutional crisis when the MP for
Arau,
Shahidan Kassim, listed out the alleged past crimes committed by the Johor royal family in the Parliament session on 19 January 1993, which was in the midst of debating the constitutional amendment bill to remove royal
immunity. ==Election results==