Surgeon who treated Oklahoma gunman among those he killed

TULSA, Okla, - A man who fatally shot five people including himself at an Oklahoma medical building, after buying an assault-style rifle on the same day, had gone there to kill a doctor who he blamed for back pain he felt after surgery, authorities said on Thursday (June 2).

The suspect, identified as Michael Louis, entered a building on Tulsa's St. Francis Health System campus with a semi-automatic weapon on Wednesday and opened fire at anyone he encountered, Tulsa Police Chief Wendell Franklin said at a news briefing. Two doctors, a receptionist and a patient were killed.

Dr. Preston Phillips, 59, the orthopedic surgeon who treated the gunman, was killed along with Dr. Stephanie Husen, a 48-year-old sports medicine specialist.

The suspect "came in with the intent to kill Dr. Phillips and anyone who came in his way," Franklin said. Authorities found a letter on the gunman that made it clear the attack was targeted.

Authorities named two other fatalities: Amanda Glenn, a receptionist, and William Love, a patient. The receptionist was initially identified as Amanda Green, but police later corrected the name on the department's Facebook page.

"They stood in the way and (the suspect) gunned them down," Franklin said.

The gunman, who police said lived in Muskogee, Oklahoma, about 50 miles (80 km) from Tulsa, had been released from the hospital on May 24 after back surgery, the police chief said. Afterwards, the man called several times complaining of pain.

The shooting comes on the heels of two other mass killings that have stunned Americans and reopened a long-standing debate over tightening controls on firearms ownership and the role of mental health in the epidemic of gun violence plaguing the United States.

"Enough is enough. This must stop. Hospitals are pillars of our communities," Chip Kahn, chief executive of the Federation of American Hospitals, said in a statement.

The gunman purchased the rifle he brought to the hospital at a local gun shop earlier on Wednesday, authorities said. He also bought a pistol at a pawn shop three days earlier.

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The suspect parked on the second floor of the garage attached to the Natalie building, a five-story medical office building with numerous offices, rooms and hallways. He entered through the second-floor entryway and worked his way into the building, Franklin said.

Police arrived at the scene three minutes after receiving a call at 4:53 pm CDT (5:53am Singapore time) of a shooting at the hospital.

Officers raced into the building and followed the sound of gunfire up to the second floor, and made contact with the victims and the suspect five minutes later, the chief said.

Officers at the scene said they heard a gunshot five minutes later, which Franklin said was the gunman taking his own life.

"When we get that call, we are going to disregard any safety measures that we might have for ourselves and we are going to go in the building to deal with the threat. Our philosophy is that we will stop the threat and we will do that by any means necessary," Franklin said. "That's how we train."

The police chief appeared to be comparing the performance of his force with that of officers last week in Uvalde, Texas, who waited about an hour before storming a classroom where the gunman in the school shooting had barricaded himself. Police have faced growing criticism that the delay may have cost some of the students their lives.