http://www.thejakartapost.com/news/2017/05/17/four-killed-eight-wounded-in-natuna-military-exercise-gone-wrong.html
Four killed, eight wounded in Natuna military exercise gone wrong
[#ff0011]A Chinese-made cannon malfunctioned and fired off shots randomly during military exercises[/#ff0011] in Tanjung Datuk, Natuna, Riau Islands province, on Wednesday. Four soldiers were killed and eight were wounded.
During the exercises, held by an Indonesian Army quick response team (PPRC TNI AD) at the Air Defense Artillery 1/K compound, soldiers were undergoing target practice with the Giant Bow cannon.
The exercises were reportedly part of preparations ahead of a May 19 event during which a military parade will be conducted in front of President Joko “Jokowi” Widodo.
However, Army spokesperson Col. Alfret Denny Tuejeh denied the exercises were connected to a parade, saying they were just regular exercises. He had previously confirmed that the incident occurred during a “rehearsal.”
“The incident occurred during the second round of exercises [on Wednesday],” he said on Wednesday, adding that the incident happened at about 11 a.m.
The gears "malfunctioned," Denny said.
The first round of exercises proceeded smoothly, he said.
Denny said there were 12 victims, including the four fatalities. The eight wounded soldiers were taken to Natuna General Hospital (RSUD Natuna).

http://news.ltn.com.tw/news/world/breakingnews/2071570
印尼軍演傳意外4死8傷 軍方：中國製火砲失控
印尼海軍昨天進行演習，過程中一門火砲突然失控，造成4死、8傷意外，事後官方表示，該門火砲是向中國購買，在演習前仍可正常測試。

《雅加達郵報》報導，印尼海軍昨天在廖內群島（Riau Islands）的納圖納（Natuna）進行射擊演訓，過程一門「巨型弓炮」突然失靈，造成4名士兵死亡、8人受傷送醫。報導指出，昨天演訓是為了19日的正式軍演進行準備工作，明天印尼總統將參與操演。

印尼軍方發言人泰耶爾（Alfret Denny Tuejeh）表示，軍演為定期進行，事件發生在第二輪演習，時間約在昨天上午11點左右。他補充，該門失控火砲齒輪故障。

軍方表示，這門火砲購於2003年，為中國製造，在演習前一天仍可正常測試，目前正在調查意外原因。