The two men did not know each other before meeting at a drinking spot, AKP La Ode Arsangka, Head of the Criminal Investigation Unit of Muna Police, told Kumparan.

As they drank, they began joking and exchanging riddles, including the classic debate over whether the chicken or the egg came first.

However, the perpetrator got emotional and left the gathering to get a sharp weapon at home.

When he returned, DR then brutally stabbed Kadir Markus 15 times, Kompas reported.