Taipei's Knife-Wielding Attacker: A Puzzle Without a Clear Motive

In Taipei, a man named Chang Wen carried out a shocking attack, leaving three people dead. Police are still trying to figure out why he did it. They know he planned it carefully. Two days before the attack, he stayed at a budget hotel near where it all ended. He even left digital clues about his plans.Chang scouted the places he attacked on foot and by bike. During the attack, he changed clothes five times. But police aren't sure where or when he did this. They also checked all the surveillance videos. Chang acted alone. He didn't talk to anyone else during the attack. Police chief Lu Chun-hung said they haven't found a motive yet. They only know Chang had a plan. He used smoke grenades and a long knife. The attack happened in the main subway station on Friday afternoon. It left everyone stunned.