Rockford shooting: Suspect, Duke Webb, detained after 6 shots, 3 killed in apparent randomness at bowling alley Don Carter Lanes

ROCKFORD, Illinois (WLS) – A U.S. military officer from Florida has been charged in a shooting at a bowling alley in Rockford that left three people dead and three injured on Saturday night, according to what authorities believe was a random attack.

Police identified the suspect Sunday morning during the press conference as Duke Webb, 37.

WATCH: Dan O’Shea, Rockford Police Chief, gives the latest shooting

Police said they believe Webb was solely responsible for the shooting on Don Carter Lanes on Saturday.

Webb was arrested shortly after the shooting around 7 p.m., Rockford police chief Dan O’Shea told a news conference Sunday morning.

The bowling alley itself was closed due to COVID-19 restrictions, but there is a bar on the top floor that, according to officials, was open with 20-25 people when Webb opened fire. The principal said the room on the top floor has double doors that open to the outside, ensuring the bar complies with Illinois’ COVID-19 softening guidelines.

“I am very confident that the officers who were at the scene in the building were able to stop further violence,” O’Shea said.

He said the three who died were all men aged 73, 65 and 69, but that they did not give names.

He also said a 14-year-old boy was taken to a Madison hospital in a stable condition and a 16-year-old girl who was shot in the shoulder was treated at a hospital and released. A 62-year-old man was operated on overnight after sustaining multiple gunshot wounds and is in critical condition, the chief said.

The suspect has no known ties to the victims, O’Shea said.

“We believe it was a completely arbitrary act, and there is no prior meeting or any kind of relationship between the suspect and any of the victims in this case,” O’Shea said. He did not provide information on what led to the shooting.

He said the suspect tried to hide his weapons before his arrest, and that he was apprehended without officers firing a shot.

“Most of the incident was captured on a surveillance video from inside the business,” O’Shea said, adding that investigators were studying captured images.

Webb is an active military man, and investigators are in contact with the U.S. military, O’Shea said.

RELATED: Gun violence in Chicago leaves 12 shots and three dead in the city

Republican U.S. Representative Adam Kinzinger, whose district includes Rockford, tweeted that tonight he is praying for the victims and their families after the horrific attack in our community.

The Rockford Register Star reported that 2020 was the deadliest year recorded for homicides in the city, with approximately 170,000 residents located about 80 miles northwest of Chicago. Thirty-five people have died in the city this year, beating the previous record of 31 in 1996.

“As we come to the end of this most difficult year and look forward to this new year, we need to know that this kind of violence must stop,” said Mayor Tom McNamara. “… And today, with the eyes of the country on us, we as Rockfordians need to show how we respond to an incident like this, as one Rockford, supporting each other.”

Webb has been charged with three counts of murder and three counts of first-degree attempted murder, according to Winnebago County Attorney J. Hanley.

ABC News and Associated Press contributed to this report.