Shooter at Milwaukee Molson Coors had a long-running dispute with a co-worker - USA TODAY

Shooter at Milwaukee Molson Coors had a long-running dispute with a co-worker  USA TODAY6 dead, including gunman, after mass shooting at Milwaukee brewery  ABC NewsMolson Coors shooting victims worked as electricians, operators...

Shooter at Milwaukee Molson Coors had a long-running dispute with a co-worker - USA TODAY

MILWAUKEE – The man who opened fire at the Molson Coors plant Wednesday, killing five co-workers and himself, had been involved in a long-running dispute with a co-worker that boiled over, according to law enforcement and brewery sources who spoke to the Milwaukee Journal Sentinel.

Anthony N. Ferrill, 51, had worked as an electrician for more than 20 years, about 17 of them at Molson Coors, according to multiple sources and online employment records.

A co-worker who asked not to be identified for fear of being disciplined said Ferrill believed he was being discriminated against because he was African American and that he frequently argued with at least one of the victims, a fellow electrician.

The co-worker said Ferrill often watched movies on his phone during the day, which the other electrician took issue with, and that the two accused each other of going into each others' offices and stealing tools or tampering with computer equipment.

What we know:Hours before Molson Coors shooting, Wisconsin lawmakers said state's gun laws won't change

About a year ago, the employee said, Ferrill started saying he believed brewery workers were coming into his home, bugging his computer and moving chairs around.

"I was, are you serious, Anthony? What? We all kind of joked about it, saying we should maybe get him an aluminum hat. Things just started getting weird. But he was dead serious about it," the co-worker said.

But another co-worker, Keith Giese, said Ferrill seemed fine when he saw him earlier this week.

"I never had a clue. I talked to him a couple of days ago and he seemed fine to me," Giese said. "I had no idea that there was a problem, that somebody could snap like that."

As word spread Thursday that Ferrill was the shooter, co-workers and neighbors echoed that surprise.

"He was a very good electrician, a very good worker and I couldn’t say anything bad about the guy," said Phillip Rauch Sr., who retired in April after working with Ferrill for 15 years. "Every time I worked with him, he was always in a good mood."

Ferrill was a licensed industrial journeyman electrician and a member of the International Brotherhood of Electrical Workers in Milwaukee. He served in the U.S. Coast Guard from 1987 to 1991 and was honorably discharged, according to Rick Flowers of Milwaukee County Veterans’ Services.

Shooter at Milwaukee Molson Coors had a long-running dispute with a co-worker  USA TODAY

  1. 6 dead, including gunman, after mass shooting at Milwaukee brewery  ABC News
  2. Molson Coors shooting victims worked as electricians, operators and machinists, CEO says  CNN
  3. Molson Coors shooting: If Milwaukee has a heart, it just took a bullet  Los Angeles Times
  4. Wisconsin brewery shooting immediately politicized by anti-gun Democrats like Elizabeth Warren  Washington Examiner
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