At the height of the Indonesia-Malaysia Confrontation , Harun Hj Mohd Said and Usman Ali ( hereinafter known as Usman Harun ) , two personnel of the KKO were dispatched to Singapore using rubber boats . Their main task is to infiltrate and sabotage the interests of Malaysia and Singapore . In practice , these operations are only able to blow up the MacDonald House and cause civilian and non-military casualties . In that incident , 20 fruit shops around the hotel was heavily damaged , 24 pieces sedan vehicles were destroyed , 30 people died , 35 people suffered serious injuries and mild . This incident is known as the MacDonald House bombing . Usman Harun were unable to escape from Singapore and was eventually arrested and sentenced to death by the Singapore government
MacDonald House bombing
MacDonald House bombing
Indonesian Marine Corps