B. de Jong was a Dutch plantation official of the Société Financière des Caoutchoucs who, on 22 May 1950, was seriously wounded by an Atjehse amokmaker (Atjehse amokmaker) at T. Pura on the East Coast of Sumatra. C. A. Zandbergen, a colleague from the same company, was also seriously wounded in the same incident.
The T. Pura incident
The incident occurred against the backdrop of the volatile security situation that prevailed in the early months of Indonesian independence, particularly in areas near the border between the former Negara Sumatera Timur and Atjeh. Ir. H. Meijer, speaking at the railway station at Besitang during the opening of a new railway connection, expressed his regret that De Jong and Zandbergen could not be present, noting that they had been seriously wounded by an Atjehse amokmaker in T. Pura on 22 May.
The term “amokmaker” (one who runs amok) was used in the colonial and immediate post-colonial context to describe individuals who committed sudden acts of lethal violence, often attributed to cultural or psychological factors. That the perpetrator was specifically described as “Atjehse” indicates that he was identified as an Acehnese, reflecting the tense relationship between the East Coast plantation zone and the Atjeh region during this transitional period.
Source
Oostkust van Sumatra-Instituut Mededeling No. 37: Deli-Figuren uit de jaren 1950 t/m 1952, compiled by Ir. F. J. J. Dootjes (Amsterdam, 1953).