Gunman kills four people at Oklahoma medical building in latest US mass shooting

• A man armed with a rifle and a handgun has killed four people inside a medical building in Tulsa, Oklahoma. The attacker then turned the gun on himself, police said in what is the latest in a string of mass shootings in the US. Tulsa Police Chief Wendell Franklin said in a news conference later on Thursday, that Dr. Preston Phillips, Dr. Stephanie Husen, Amanda Green and William Love were all killed in the inicdent in the medical bulding of Saint Francis Hospital.