KUALA LUMPUR, Oct. 15 -- A video purportedly showing a student believed to be the suspect in a school murder case in Bandar Utama calmly walking while drinking water and holding a knife has gone viral on social media.

The nine-second clip shows the suspect wearing black gloves and walking as if nothing had happened.

The student's calm demeanour has drawn a wave of reactions from netizens.

Police yesterday confirmed that a 16-year-old female student at a secondary school in Bandar Utama was fatally stabbed by a male classmate.

The attack reportedly took place in or near the girls' toilet of SMK Bandar Utama 4 on Tuesday morning.

Initial investigations found that the victim had suffered multiple stab wounds.

Two sharp weapons believed...