A bartender tracked down his ex-girlfriend through pictures she posted on photo-sharing site Instagram and then slashed her male companion, severing one of his fingers completely.
The victim turned out to be her cousin. On Monday, Muhammad Nurafiyan Mohamed Sani (photo), 20, was sentenced to three years in jail and six strokes of the cane.
He had pleaded guilty last week to causing grievous hurt to Muhammad Mifdah Rosli, 21.
The court heard that Ms Nurul Atikah Abdulla, 20, was at the Azzura Club in Sentosa on the evening of June 8. There, she took a picture of herself and uploaded it onto Instagram.
Muhammad Nurafiyan noticed that the picture was also tagged under Mr Muhammad Mifdah's name and became annoyed. He then identified the other man from one of her pictures.
Ms Nurul Atikah had planned to go to a chalet in Pasir Ris later and he called her and demanded that she give him the address. She refused and hung up on him.
In the early hours of June 9, Muhammad Nurafiyan found out that his friend Ahmad Taqlyyudin Rosli, 22, was also at the same chalet through pictures on Instagram, and he got the address from his friend.
Muhammad Nurafiyan and another friend Muhammad Faris Kamal took a taxi to the chalet.
Both were armed with knives.
The duo had asked Mr Ahmad Taqlyyudin to tell Mr Muhammad Mifdah that someone was coming over to give him something.