Stabbing suspect acted solo, motive unclear, police sayStaff writer, with CNAA police investigation has found that a man who went on a stabbing spree in Taipei last month acted alone and that the fall from a building that killed him was not an accident, but police remain unsure of what motivated the attacks. The 27-year-old suspect, Chang Wen (張文), killed three people and injured 11 during the attack. Photo: CNABefore the attack, Chang destroyed his laptop and left his bank account nearly empty, police said. Police said they still had not determined a clear motive behind Chang’s actions, despite the considerable amount of information they accessed. Police said the investigation is ongoing, and that its final report is expected to be released soon.