A second stabbing incident with multiple victims is making headlines today. Police in Toronto say a man stabbed three men and a woman inside an office building, reports the CBC. Two of the victims, including the woman, have life-threatening injuries, reports the Globe and Mail. All worked for human resources company Ceridian. Former employee Chuang Li, 47, has been arrested, though a motive remains unclear. The Toronto Sun reports that the assailant used a pair of scissors. (More Toronto stories.)