Police: 3 killed in shooting at medical building in Tulsa

Three people were killed in a shooting at a medical building,in Tulsa, Oklahoma on Wednesday. But it was unclear how the shooter died.St. Francis Health System locked down its campus Wednesday afternoon because of the situation at the Natalie Medical Building.The building houses an outpatient surgery center and a breast health center. Dozens of police cars could be seen outside the hospital complex, and authorities shut down traffic as the investigation went on.