LAS VEGAS, Nevada – Investigators are working to understand the motive behind a shooting that left three people dead at the University of Nevada, Las Vegas. The suspect, a 67-year-old career college professor with connections to schools in other states, died at the scene on Wednesday after a confrontation with police. Authorities have not publicly identified the suspect, pending notification of relatives, according to Las Vegas Metro Sheriff Kevin McMahill.

The shooter, who had unsuccessfully sought a job at the school, moved through multiple floors of the university’s business school building before the armed confrontation with law enforcement outside, the sheriff said. In addition to the three people killed, one person was critically injured by gunfire, but that person’s condition later stabilized at the hospital. four others were taken to hospitals for panic attacks.

The shooting has prompted the cancellation of classes through Sunday at the university, and there are still considerations about how the campus will operate next week, when final exams are set to begin, UNLV president Keith Whitfield wrote in a Wednesday post on the school’s website.

President Joe Biden has expressed condolences for the families impacted by Wednesday’s Las Vegas shooting and a killing spree in Texas this week. He also called on Republicans in Congress to work with Democrats to pass a ban on assault weapons and high-capacity magazines.

The University of Nevada, Las Vegas, is just minutes away from the scene of the deadliest mass shooting in modern US history – the shooting at the Route 91 Harvest music festival on October 1, 2017. Sheriff McMahill said the training Las Vegas authorities have undergone since Route 91 contributed to how quickly they were able to respond and stop the shooter at UNLV.