|Date||15 April 1987|
|Deaths||21 (including perpetrator)|
The massacre began at Wirjo's home, where he attacked his adoptive son Renny and his friend Arbaiyah, both 4-years-old, with a parang and a sickle. While Renny managed to escape, Arbaiyah was hit in the neck and died. Wirjo then entered the home of Maskur, a neighbour, where he first killed Mrs Maskur with the sickle, before turning on her 80-year-old husband, who tried to help her. Afterwards he made his way through the village, assaulting people at random.
By the end of the day Wirjo had hacked a total of 32 people, most of them farmers on the way to their fields and students going to school. 18 of his victims died at the scene, while two others later succumbed to their wounds in hospital. As the culprit was nowhere to be found authorities temporarily suspended classes at local schools, while people locked themselves in their homes.
After an extensive manhunt, including police, dogs, and the army, Wirjo was found the next day just 3 miles west of his house, dangling from the roots of a tree growing over a riverbank. He had committed suicide by hanging himself with his belt.
Among those killed were:
Wirjo was the fifth of nine children. According to his wife, Indarah, he was drinking and gambling and complained a lot about his inheritance. Reminded of his shortcomings he would get angry and threaten his wife with his sickles. The day before the murders he beat her during an argument. It was reported that prior to the massacre Wirjo had fasted for a month and that he had also dug up his mother's corpse in the graveyard to gnaw on her bones, though other reports indicated no such thing had happened, instead relating that she was still alive at that time.
- Crazed farmer kills 18 with sickle, The Palm Beach Post (April 16, 1987)
- Sekali mengamuk 20 nyawa melayang, Tempo magazine (April 25, 1987)
- Crazed farmer's rampage leaves 18 dead, New Straits Times Malaysia (17 April 1987)
- Dogs join hunt for man who killed 18, New Straits Times Malaysia (18 April 1987)
- Fasting man runs amuck, Manila Standard (17 April 1987)