Following the Steelers' 27-24 victory over the Tennessee Titans on Monday night, Mitchell started direct messaging Twitter users critical of his performance. Besides telling one fan to kill himself, he also told another fan to "die broke" and called another user "trash."
CBS Pittsburgh -- which obtained several screenshots of direct message conversations between Mitchell and Twitter users -- asked the safety about the interactions, which he did not deny. "If people tweet me, I tweet them back," he told the network.
According to the report, the team banned Mitchell from social media after the safety's comments came to light.
Mitchell referenced "haters" shortly after Pittsburgh's game against Tennessee concluded.
Last week, Mitchell tried to leap over the Jets' offensive line as New York was taking a knee, a play Pittsburgh coach Mike Tomlin called "not professional."
Mitchell is in his sixth NFL season. He played four years with Oakland and one with Carolina before arriving in Pittsburgh this season. He has started 11 games for the Steelers this season, recording 38 tackles and two forced fumbles.
- Stanley Kay