4 people were killed in a mass shooting in Tulsa, Oklahoma, hospital campus .

Another day of mass shooting in the land of the free

By Edward Era Barbacena

Source: CNN

At least four people were killed Wednesday in a shooting on a hospital campus in Tulsa, Oklahoma, police said in a news conference Wednesday evening.

The gunman is also dead, police said. Authorities believe the shooter's gunshot wound was self-inflicted, Tulsa Police Department Deputy Chief Eric Dalgleish said in the news conference.

Dispatchers received a call about an active shooter at the Natalie Medical Building, a physicians' office building on the St. Francis Hospital campus, at roughly 4:52 p.m. local time, Dalgleish said.

Officers responded to the scene at roughly 4:56 p.m. and made contact with victims and the suspect roughly five minutes later, Dalgleish said. The officers who arrived could hear shots inside the building, which directed them to the second floor, according to the deputy chief.

"The scene is fairly limited to one section of that floor, on the second floor," Dalgleish said. No officers were injured, he added.

Investigators are interviewing witnesses that were in the building, Dalgleish said.

Police said they are "getting close" to identifying the suspect, who Dalgleish said had one rifle and one handgun with him.

A 'catastrophic' scene

Earlier Wednesday, Richard Meulenberg, with police, said authorities were continuing to evacuate "multiple floors" of the building, which included "hundreds of rooms and hundreds of people."

"We're treating this as a catastrophic scene right now," Meulenberg said.

There has been a reunification site set up for family members and friends at Memorial High School west of LaFortune Park, police added.

President Joe Biden has been briefed on the shooting, a White House official said. The White House is closely monitoring the situation and has reached out to state and local officials to offer support.

The Bureau of Alcohol, Tobacco, Firearms and Explosives is also assisting on scene, the ATF Dallas Field Division said on Twitter

'I just knew that it was a shooting'

Debra Proctor was in another building on the hospital campus for a doctor's appointment when she heard police sirens ringing out.

When she stepped outside, first responders were lined up everywhere, she told CNN. Proctor, who has been a registered nurse for more than four decades, said it was a "shocking" scene.

"Police were everywhere in the parking lot, up and down the surrounding blocks," Proctor said. "They were still arriving when I was leaving."

Kalen Davis, a lifelong Tulsa resident, was waiting in traffic around 5 p.m. local time when she saw multiple police cars responding to the scene.

In a video she shared with CNN, authorities can be seen running toward a building with their guns drawn. Two officers are seen taking long guns out of their trunks as more emergency vehicles race to the scene.

"I just knew that it was a shooting situation because I saw police running with rifles," Davis, 45, told CNN. "That's when I got emotional."