The Bears released Jeremiah Ratliff last week after the veteran tackle showed up to Halas Hall in no condition to work and got into a heated exchange with GM Ryan Pace.
Sources told CSNChicago.com's John "Moon" Mullin that Pace attempted to dial down the moment, but Ratliff's threatening behavior prompted the team to call the Lake Forest Police Department because they feared for their safety.
On Friday, a report from TMZ Sports showed why exactly the Bears had a reason to be concerned.
According to the report, Ratliff told somebody at Halas Hall that he "felt like killing everybody in the building" before gathering his belongings and leaving the team facility without further incident.