Wednesday's hospital shooting in the United States resulted in the deaths of five individuals, including the shooter.

A man armed with a rifle and a handgun opened fire inside a medical facility in Tulsa, Oklahoma, resulting in a fatality.

Jonathan Brooks, Tulsa's deputy police chief, told reporters outside the St. Francis Hospital campus that the shooter also died, presumably from a self-inflicted gunshot wound.

Police were attempting to determine the man's identification, but he was between 35 and 40.

The incident occurred on the second level of the Natalie Building on campus, which houses medical offices and an orthopedic center.

Eric Dalgleish, a second deputy police chief in Tulsa, stated that he believed the deaths comprised staff and patients.

Upon receiving a call about the shooting, officers arrived on the site three minutes later and contacted the victims and the perpetrator five minutes later, he said.

Captain Richard Meulenberg of the Tulsa Police Department first told ABC that four persons were shot and killed: "One died after leaving the scene to try to get medical aid, and one of those four is going to be our suspect."

Captain Meulenberg stated that officers viewed the scene as "catastrophic" as "several" individuals were shot and "multiple injuries" were sustained.

"Officers are currently going through every room in the building checking for additional threats," police stated on Facebook just before 6 p.m. We are aware that there are several injuries and possibly multiple fatalities.

The White House stated that US Vice President Joe Biden was briefed on the Tulsa incident and that the administration has given assistance to local officials.

According to ABC's Captain Meulenberg, police received a call about a man with a weapon on the second floor of a building on the medical campus, and "it turned into an active shooter situation."

When authorities arrived on the scene, it was too late. "They discovered that a couple of victims had been shot. A couple had died at that time."

"We also found who we believed to be the shooter and still believe to be the shooter, because he had a long rifle and a pistol with him," Captain Meulenberg stated.

Mayor GT Bynum of Tulsa stated, "I also want to express our community's profound gratitude for broad range of first responders who did not hesitate today to respond to this act of violence."

Another gun incident shakes the US

The shooting is the most recent in a succession of deadly gun attacks that have shaken the United States over the past month.

On May 14, a white supremacist targeting African-Americans killed ten people at a Buffalo, New York, grocery store. The perpetrator survived and is now facing prosecution.

Ten days later, a gunman armed with an AR-15 stormed a school in Uvalde, Texas, killing 21 individuals, including 19 small children, before being shot dead by police authorities.

In the United States, gun regulation meets significant opposition from most Republicans and some rural-state Democrats.

Mr. Biden, who visited Uvalde over the weekend, vowed to "continue to push" for reform: "I think things have gotten so bad that everybody is getting more rational about it."