The authorities in Milwaukee were working on Thursday to piece together how and why a 51-year-old gunman killed five of his co-workers at the city’s sprawling Molson Coors campus.
The police have not yet offered a motive for Wednesday’s shooting, nor have they released details about the gunman or how the shooting unfolded, although a local newspaper identified him as a longtime employee who had feuded with a co-worker.
Here is what we know:
The victims were all employees of Molson Coors.
The victims have not yet been publicly identified by the authorities, though the police have said their families were being notified.
More than 1,000 people work at the sprawling Molson Coors complex of about 20 buildings, known for decades as the Miller Brewery. The police have not detailed what, if any, connection the victims had to the gunman.
No one else was wounded in the attack.
“Unfortunately, I am devastated to share that we lost five other members of our family in this tragic incident,” Molson Coors’s chief executive, Gavin Hattersley, said in a statement. “There are no words to express the deep sadness many of us are feeling right now.”
The gunman was also an employee, and killed himself after the attack.
The police said that the gunman was a 51-year-old Milwaukee man who was wearing his company uniform as he carried out the shooting. He died of a self-inflicted gunshot wound, they said, but they did not disclose a motive or say what type of weapon he used.
Mr. Hattersley confirmed that the gunman was an employee.
The Milwaukee Journal Sentinel, relying on law enforcement sources, identified him as Anthony Ferrill, an electrician who had worked for the company for more than two decades. Mr. Ferrill’s sister, reached by phone, confirmed that her brother was the gunman but wouldn’t comment further.
Employees of the brewery told The Journal Sentinel that Mr. Ferrill had been involved in a long-running dispute with a co-worker, who was among the victims on Wednesday.
The shooting began in the afternoon, and a lockdown lasted for hours.
People began calling in to the Police Department with reports of gunfire at about 2 p.m. Wednesday. As officers from several departments raced to the area, which is west of downtown, schools went on lockdown and residents were told to stay away.
The police continued to search the Molson Coors campus for hours after the shooting. Some workers remained stuck inside the complex late into the evening waiting for the police to finish their search and clear the workers to go home.
The brewery is an icon in Milwaukee.
State Senator LaTonya Johnson, a Democrat whose district includes the Molson Coors complex and its towering “Home of the High Life” sign, said the facility was a point of pride in Milwaukee. The company, still known to many in the area by its former name, MillerCoors, continued to invest in the city and pay competitive wages even when some other employers left. For $10, visitors could tour the complex, including its famous beer caves, and sample its beverages.
“The district has changed over the years, and so has the community surrounding MillerCoors — and they stayed,” she said. “They’re committed.”
Mr. Hattersley said that the complex would be closed the rest of the week and did not say when it would reopen.
The president and other leaders mourned the victims.
“Our hearts break for them and their loved ones,” President Trump said at the White House. “We send our condolences. We’ll be with them, and it’s a terrible thing, a terrible thing.”
Gov. Tony Evers of Wisconsin said the shooting was “yet another act of gun violence that will have long-lasting consequences for this community and our state,” and ordered that flags be flown at half-staff at government buildings on Thursday.
“We shouldn’t accept this — this is not the way that things should be,” said Lt. Gov. Mandela Barnes, a Democrat, who noted that Wisconsin has been the site of several mass shootings in recent years. “We should never grow comfortable in the face of these repeated tragedies all across America.”
“It’s frightening,” said Representative Gwen Moore, a Democrat whose district includes Milwaukee, and whose congressional office includes a Miller High Life sign. “It’s anathema to the kind of culture that we expect. This is heartbreaking because Milwaukee is a very friendly city.”
It was the latest mass killing at a U.S. workplace.
Twelve months ago, at a suburban Chicago factory about 115 miles from the Milwaukee crime scene, a disgruntled employee who had been fired from his job killed five other workers. Last May in Virginia Beach, a municipal worker who quit his job went on a shooting rampage and killed 12 people.
