Latest report reveals why Steelers abruptly fired an assistant coach

Hours after the Pittsburgh Steelers fired a recently hired coach from Mike McCarthy's staff, the reasoning for the surprising and abrupt dismissal has come out. 

On Friday, the Steelers relieved special teams assistant Derius Swinton of his duties because of a violation of team policy, sources told ESPN's Adam Schefter. 

Derius Swinton's firing is reportedly due to "workplace misconduct" 

While the franchise declined to go into detail or offer more information at this time, ESPN has also learned through sources that the violation is due to what's being labeled as "workplace misconduct." It is unclear which type of misconduct Swinton may have been involved in. 

Swinton, who was initially hired on Feb. 5 to serve under new special teams coordinator Danny Crossman, declined ESPN's request for comment. But the firing in the middle of OTAs suggested an infraction beyond football was at play.