Charlie Sheen is threatening to walk off the set of FX’s Anger Management if they don’t fire Selma Blair.

Tensions grew between the two actors after Blair was overheard complaining to production about Sheen’s work ethics, including arriving late and leaving early from work. Sheen reportedly approached Blair and ‘fired’ her himself.

TMZ reports that Sheen returned to work Monday with a vengeance, telling production to start the paperwork to get Blair off the show or see him walk.

TMZ caught up with the Cruel Intentions actress, who explained that she hasn’t heard anything about her alleged firing. "I don't know anything,” she explained.

As we previously reported, Sheen gushed about Blair when she was noted as the leading woman to fill the role on the hit FX series calling Blair a “special lady” who is “incredibly hilarious” off camera.

FX has not commented on the feud and according to TMZ, execs are currently trying to figure out how to smooth over the situation.

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