TULSA, United States, June 2, 2022 (BSS/AFP) - A gunman has killed at least 
four people at a hospital building in Tulsa, Oklahoma, police said -- the 
latest in a string of mass shootings across the United States in recent 
weeks.

The killings come as Texas families bury their dead after a school shooting 
left 19 young children dead just eight days earlier.

The Tulsa shooting suspect, who was armed with a rifle and a handgun during 
his attack on the Saint Francis hospital campus, died by suicide, police said 
Wednesday.

"Right now we have four civilians that are dead, we have one shooter that is 
dead, and right now we believe that is self-inflicted," Tulsa Police 
Department Deputy Chief Eric Dalgleish told reporters.

He said officers responded immediately after emergency calls came in 
reporting that a gunman had stormed into the second floor of the Natalie 
Building, which houses a clinic on the Saint Francis campus.

Police "were hearing shots in the building" when they arrived, according to 
Dalgleish, who said officers then searched each room and floor while trying 
to clear the building during what authorities described as an active shooter 
situation.

Police Captain Richard Meulenberg said officers treated the scene as 
"catastrophic," with "several" people shot and "multiple injuries."

It was not clear how many other people might have been wounded. 

Dalgleish said the entire assault -- from the moment emergency calls came in, 
to the time officers engaged the shooter -- lasted about four minutes.
He also noted that the suspect had yet to be identified.

US President Joe Biden has been briefed on the shooting, the White House said 
in a statement, adding that the administration has offered support to Tulsa 
officials.

According to the Gun Violence Archive, there have been 233 mass shootings 
this year in the United States -- more than one such incident per day in 2022 
so far.

US media reported the country was hit by a dozen mass shootings over the 
recent Memorial Day weekend.

The United States generally counts mass shootings as involving four or more 
deaths.

- 'Preventable' -

Elizabeth Buchner, a legal assistant who lives behind the building where the 
shooting occurred, said she rushed out of her house when she heard 
helicopters and a loud commotion coming from the direction of the hospital.

"It was the most law enforcement I've ever seen at one place in my entire 
life," Buchner, 43, told AFP by telephone.

She said she witnessed a tactical team rush inside as part of a response that 
she described as "fast and strong," with "no hesitation."

Melissa Provenzano, an Oklahoma state legislator, also praised the officers' 
swift response.

"It could have been so much worse," she told CNN.

But she expressed frustration at how such tragedies keep happening in the 
country.

"These things are preventable, and it's time to wake up and address this."
- Uvalde funerals -

The shooting is the latest in a spate of deadly assaults by gunmen that have 
rocked the United States in the past month.

On May 14 a white supremacist targeting African Americans killed 10 people at 
a grocery store in Buffalo, New York. The shooter survived and is facing 
charges.

Ten days later an 18-year-old gunman armed with an AR-15 burst into an 
elementary school in the small Texas town of Uvalde and killed 21 people -- 
19 of them young children -- before being shot dead by law enforcement.

On Wednesday one of the two teachers killed in that attack was laid to rest 
in Uvalde, a day after the first funerals for the children.

Gun regulation faces deep resistance in the United States, from most 
Republicans and some rural-state Democrats.

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

Some key federal lawmakers have also voiced cautious optimism and a 
bipartisan group of senators worked through the weekend to pursue possible 
areas of compromise.

They reportedly were focusing on laws to raise the minimum age for gun 
purchases or to allow police to remove such weapons from people considered a 
threat to themselves or others -- but not on an outright ban on high-powered 
rifles like those used in Uvalde and Buffalo.