Police have identified the man who opened fire at an Alabama water manufacturing plant early Tuesday.

Albertville, Alabama, police said Andreas Deon Horton, 34, killed two and injured two others before he turned the gun on himself.

Police Chief Jamie Smith confirmed the fatalities and injuries, and Horton was later found in neighboring Guntersville, about 10 miles away, dead from a self-inflicted gunshot wound.

The gunfire broke out about 2:30 a.m. at a Mueller Co. plant in Albertville, Smith told reporters. The gunman then got in a vehicle and left the factory. His body was found hours later inside a car in Guntersville, Smith said.

“The person was deceased from what appears to be a self-inflicted gunshot wound,” Smith told Al.com.

Cody Windsor, a Mueller employee who was at home when the shootings occurred, told The Associated Press he knew the shooter and one of the victims, but didn’t know what might have prompted the shooting.

Friends working the overnight shift said the shooting happened in a part of the plant where fire hydrants and pipes are painted, and that an announcement about an active shooter was made over a PA system at the factory, which occupies several buildings over a large area near a railroad track, with fire hydrants stored on racks outside.

“We work together, and we bond together. We’re here as much as we are at home,” said Windsor. From now on, he said, he might be nervous “that somebody is going to walk in the door and shoot you.”

A company representative did not immediately respond to the AP for a comment.

Mueller Co., based in Cleveland, Tennessee, is a subsidiary of Atlanta-based Mueller Water Products Inc., which calls itself a leading maker of water distribution and measurement products in North America. More than 400 people work at the plant in Albertville, giving the city in northwest Alabama its nickname of “Fire Hydrant Capital of the World.”

The factory shooting comes amid a wave of gun violence nationwide that has police and criminal justice experts concerned. Within hours of the Alabama gunfire Tuesday, four women were killed and four other people were wounded in a pre-dawn shooting at a home in Chicago, police said. And the toll from this past weekend included two people killed and at least 30 others wounded in mass shootings in Chicago, the Texas capital of Austin and Savannah.

Law officers had hoped that a spike in U.S. homicides last year would subside as the nation emerged from coronavirus restrictions, but they remain higher than they were in pre-pandemic times.

“There was a hope this might simply be a statistical blip that would start to come down,” said Chuck Wexler, executive director of the Police Executive Research Forum. “That hasn’t happened. And that’s what really makes chiefs worry that we may be entering a new period where we will see a reversal of 20 years of declines in these crimes.”

Albertville is a tight-knit community, and residents will come together to support relatives of those killed and injured, city spokeswoman Robin Lathan said.

“Everyone is absolutely heartbroken and devastated,” she said. “The Mueller Company is part of the lifeblood of who we are in the city of Albertville. It’s just a devastating blow.”