NAU campus
The Flagstaff campus of Northern Arizona University is seen in this undated photo. Google Maps

Colin Brough, a student at Northern Arizona University, was killed during a shooting at the school’s Flagstaff campus early Friday. Students Nicholas Prato, Kyle Zientek and Nicholas Piring were wounded and were being treated at Flagstaff Medical Center, university officials said in a statement. Their ages and conditions were not immediately released.

“We are shocked and deeply saddened by this incident. Our thoughts are with the victims and their families, and our entire Lumberjack family,” NAU President Rita Cheng said Friday.

According to what appears to be his LinkedIn profile page, Brough was a freshman at the school who was majoring in business marketing. He was an "associate member of the Delta Chi Fraternity, and a member of the Alpha Lambda Delta Honor Society," the LinkedIn summary states. Brough also listed interests in finance, lacrosse, hiking, snowboarding, boating and social marketing, among others.

Northern Arizona University students lamented the loss of their classmate on social media.

The incident took place outside Mountain View Hall in a parking lot on the northeast end of the Flagstaff campus, which has about 20,000 students. The first call of shots fired came at 1:20 a.m. local time or 4:20 a.m. EDT. Steven Jones, an 18-year-old freshman at the school, has been identified as the shooter and is in custody, Chief G.T. Fowler, of the university police force, announced at a press conference Friday morning.

The early morning shooting stemmed from a fight between two groups of students, campus police said. Many details surrounding the "confrontation" were not immediately available, but Fowler said officers arrived on the scene shortly after the shooting and took Jones into custody. He said students are forbidden from carrying firearms on campus.

Delta Chi Fraternity told Fox News that some of its members were involved in the shooting but did not specify which students were part of the frat. The fraternity’s executive director said it was an isolated incident and not fraternity-related.

Delta Chi members also took to social media to express their sorrow.

This is the second shooting at a college campus this month. Chris Harper-Mercer, 26, gunned down nine people before killing himself at Umpqua Community College in Roseburg, Oregon, last week. Nine others were wounded in the rampage, the New York Times reported. An investigation into a motive for the shooting continues.

President Barack Obama was traveling to the southern Oregon town Friday for closed-door visits with families of victims, a White House official told NBC News. Obama voiced his frustration with America's gun laws after the mass shooting last week and dozens of others already this year, saying these deadly events have somehow "become routine." He pointed the finger at the National Rifle Association and gun-rights advocates for blocking even "modest regulation of how we use a deadly weapon."

"We've become numb to this," Obama said during a press conference at the White House Oct. 1.