Three people have been killed and another injured in a shooting at the University of Nevada, Las Vegas.

According to police sources, the attacker was killed in the incident.

The US MSNBC website reported that the fatal shooting incident added another bloody chapter to the worst year of gun violence in the United States.

Just a few days ago, the number of mass shootings in the United States in 2023 that left at least four people dead, not including the shooter, reached 38, the highest since 2006.

According to Awful Announcing, US basketball superstar LeBron James, who was in Las Vegas for a game, expressed his frustration at the ongoing gun violence across the US and the country's slow response to the crisis.

"We're the only ones who are responding and dealing with the same thing all the time, saying the same thing every time it happens, but it keeps happening."

"To be able to get a gun, to be able to do these things over and over again, and nothing changes is just ridiculous," James said.

"It just doesn't make sense, it's ridiculous that we're losing innocent lives on campuses, in malls, in movie theaters, in all sorts of places."

"We haven't really done anything," he criticized. "The reality is that it's getting easier and easier to get guns. It's just silly."

Pointing to the record number of mass shootings in the United States this year, Kris Brown, president of the US gun control campaign group Brady, criticized that "students at the University of Nevada, Las Vegas, have been taught from a young age to prevent shootings, And the ripple effects of today will be felt for the rest of their lives."

Ark Valley Voice6, an online news site in the United States, also said that the United States is in the midst of an epidemic of gun violence, and the country's "romantic relationship" with guns must end.

There are two reasons why gun violence in the US is so severe: the growing tolerance and normalisation of violence and the easy availability of guns, and the failure of US governments at all levels to stand up to the gun lobby.

According to the Gun Violence Archive, as of the morning of December 6, there have been 630 mass shootings in the United States in 2023, which is only 365 days a year.

The article lamented that at the time of writing, that number had risen to 631 because of the shooting at the University of Nevada, Las Vegas.

Prior to this, a Texas news story also mentioned that a new device has been invented that can transform a pistol into a machine gun.