Where a tenant commits a criminal act and injures another tenant in the common area of a residential building, the landlord had no duty to prevent the injury unless it is caused by the physical condition of the property or the landlord has voluntarily undertaken to provide security from criminal acts. The Illinois Appellate Court, 1st District, 2nd Division, affirmed the decision of Cook County Circuit Judge Kathy M. Flanagan. The Mercy Housing Management Group is a not-for-profit corporation that provides …