A noose was once placed on the locker of the Molson Coors employee who went on a shooting rampage at his Milwaukee, Wisconsin, workplace last week reports the Washington Post. 

On February 26, Anthony Ferrill shot five of his co-workers before turning the gun on himself. Despite the prior racist incident, a motive has not yet been established in the attack. 

The 2015 noose incident was one of several racist occurrences over the years which took place at one of the largest breweries in the country. The N-word was also written in the bathrooms, and racist cartoons appeared in the workplace.

Ferrill wasn't at work on the day of the incident, so the noose hanging was relayed to him by the Human Resources department. 

“Our HR team notified him of the incident, it was investigated fully, no camera footage was available to show who placed it on the locker,” the company said in a statement to The Post.

Ferrill was also offered security services from HR, but it's unclear as to whether or not he utilized them.

The company says they take all allegations of racism seriously. 

“It’s why we have terminated people for behavior we believe is unacceptable. It’s why we have tried to create safe spaces for discussions on diversity and inclusion in the Milwaukee brewery and across our network,” Adam Collins, the company’s chief communications and corporate affairs officer, said.

"It was a disgusting act five years ago, and remains disgusting today," Collins said of the noose, according to CNN. 

An anonymous employee said company employees continue to exhibit prejudicial behavior. 

“It’s a good old boys club to this day. There was a saying on the brewery floor — ‘no blacks, no b***hes,’ ” the unidentified worker said. 

Collins added it's evident that there's still more the company needs to do to combat racism. 

“But there’s no two ways about it. We have more work to do,” Collins said. “Fostering an inclusive and welcoming workplace is something every organization has to work towards each day, and we aren’t going to shy away from our responsibility to take a deep look at our own culture following this event.”

Family and friends of Ferrill were disheartened to learn of the shooting. 

"I couldn't believe it. I just can't believe it that he would do that. It really ticked him off I guess," Ferrill's neighbor, Erna Roenspies, told ABC 27. "He's a good family man. If you would ask for $100 he'd give it to you and forget it. That's the type of guy he was."

Thirty-three-year-old Jesus Valle Jr., 51-year-old Gennady Levshetz, 33-year-old Trevor Wetselaar, 57-year-old Dana Walk and 50-year-old Dale Hudson were all slain in the shooting reports ABC 30.