A engineering company employee in Michigan has been fired afterpolice determined she baked laxatives into brownies intended for a departing colleague's send-off. Another employee tipped off management and no one ingested the brownies. The 47-year-old denied doing it at first, but after learning the police would test the brownies, she admitted to tainting the brownies. Other employees told police there may have been tension between the woman and the departing employee. Police say she faces no charges but if anyone had eaten the brownies it could have been considered a criminal act.