The shooter who killed at least six people at a Walmart in Chesapeake, Virginia on Tuesday night is said to have had professional difficulties.

As the police told the television station WAVY, after the shooting on Wednesday night, the investigators found a statement on the thirty-one-year-old's cell phone in which he complained about the "change in employment".

Andre B. had worked for the department store chain for twelve years, in recent years as a team leader.

In the statement, he writes that he felt bullied by colleagues after changing his duties.

B. shot around with a handgun on Tuesday shortly after 10 p.m. during a meeting in the lounge of the department store.

A colleague reported that B. held the gun to her head, but then asked her to leave the room.

Whether he had opened fire on customers after the shots at the department store employees remained open for the time being.

Neighbors and former colleagues describe the shooter as a loner.

He is said to have stayed away from social media for fear of alleged spying.

After the attack, in which five Walmart employees between the ages of 22 and 70 and a teenager died and others were injured, B. committed suicide.