A 19-year old man was stabbed at Lot One Shoppers' Mall on Tuesday night.

His attacker, believed to be in his 20s, was arrested at the scene, police told The Straits Times on Wednesday.

The incident occurred about 9.30pm outside the popular mall in Choa Chu Kang Avenue 4. It is unclear what provoked the attack.

The victim was conveyed to hospital by ambulance, and police investigations are ongoing.