According to the image on Twitter, a dispute occurred between a 17-year-old with another girl. The year 12 girl that committed the act started out by harassing a year 1 student by pouring drinks on her.
The year 1 girl retaliated and poured the drinks against the year 2. This escalated it into a physical fight between the 2 girls, pulling hair and fighting action begun.
Out of a sudden the year 2 student took out a weapon that appears to be a penknife and stabbed the year 1 girl in the lower ribcage.
According to the media release, this incident occurred at 1 Choa Chu Kang Grove in the afternoon. Luckily, the girl was not injured to the extent of life-threatening. The attacker has been arrested and suspended from school.
The injured girl was sent to Ng Teng Fong hospital for treatment.