According to witnesses, the man took out a knife after having a bitter quarrel with them. 3 were stabbed and the 4th was kicked in the stomach.

• 目击者称，当时该男子与这4人发生争吵，随后拿出身上携带的小刀一阵乱捅，当时就有3人倒地，另一人腹部被踢。