CHARLOTTESVILLE, Va. (AP) — A University of Virginia student and former member of the school’s football team fatally shot three current players as they returned from a field trip, authorities said, setting off panic and a 12-hour lockdown of the campus until the suspect was captured Monday.

Students who were told to shelter in place beginning late Sunday described terrifying hours in hiding. While police searched for the gunman through the night, students sought safety in closets, dorm rooms, libraries and apartments.

Officials got word during a morning news briefing that the suspect, 22-year-old Christopher Darnell Jones Jr., had been arrested.

“Just give me a moment to thank God, breathe a sigh of relief,” university Police Chief Timothy Longo Sr. said after learning Jones was in custody.

The violence erupted near a parking garage just after 10:15 p.m. Sunday as a charter bus full of students returned to Charlottesville from seeing a play in Washington.

University President Jim Ryan said authorities did not have a “full understanding” of the motive or circumstances of the shooting.

“The entire university community is grieving this morning,” a visibly strained Ryan said.

The killings happened at a time when the nation is on edge from a string of mass shootings during the last six months, including an attack that killed 19 students and two teachers at an elementary school in Uvalde, Texas; a shooting at a Fourth of July parade in a Chicago suburb that killed seven people and wounded more than 30; and a shooting at a supermarket in Buffalo, New York, that killed 10 people and wounded three.

Ryan identified the three slain students as Devin Chandler, Lavel Davis Jr. and D’Sean Perry.

Two students were wounded and hospitalized, Ryan said.

Mike Hollins, a running back on the football team, was in stable condition Monday, his mother, Brenda Hollins, told The Associated Press.

The shooting touched off an intense manhunt that included a building-by-building search of the campus. The lockdown order was lifted late Monday morning.

Jones was taken into custody without incident in suburban Richmond, police said.

The arrest warrants for Jones charged him with three counts of second-degree murder and three counts of using a handgun in the commission of a felony, Longo said.

It was not immediately clear whether Jones had an attorney or when he would make his first court appearance.

Jones had once been on the football team, but he had not been part of the team for at least a year, Longo said. The UVA football website listed him as a team member during the 2018 season and said he did not play in any games.

Hours after Jones was arrested, first-year head football coach Tony Elliott sat alone outside the athletic building used by the team, at times with his head in his hands. He said the victims “were all good kids.”

“These precious young men were called away too soon. We are all fortunate to have them be a part of our lives. They touched us, inspired us and worked incredibly hard as representatives of our program, university and community,” he said in a statement.

Jones came to the attention of the university’s threat-assessment team this fall after a person unaffiliated with the school reported a remark Jones apparently made about possessing a gun, Longo said.

No threat was reported in conjunction with the concern about the weapon, but officials looked into it, following up with Jones’ roommate.

Longo also said Jones had been involved in a “hazing investigation of some sort.” He said he did not have all the facts and circumstances of that case, though he said the probe was closed after witnesses failed to cooperate.

In addition, officials learned about a prior incident outside Charlottesville involving a weapons violation, Longo said. That incident was not reported to the university as it should have been, he said.

Classes and other academic activities were canceled for Tuesday. A university-wide vigil was being planned for a later date, and Gov. Glenn Youngkin ordered flags lowered to half-staff on Tuesday in respect and memory of the victims, their families and the Charlottesville community.

Elsewhere, police in Moscow, Idaho, were investigating the deaths of four University of Idaho students found Sunday in a home near the campus. Authorities released few details, except to say that the deaths were labeled homicides.