The public battle between the actor and studio has escalated even further. Fisher levelled serious accusations against his Justice League director and held the studio responsible. In his original posts he said: “Joss Whedon’s on-set treatment of the cast and crew of Justice League was gross, abusive, unprofessional, and completely unacceptable. He was enabled, in many ways, by (Justice League producers) Geoff Johns and Jon Berg.” His allegations prompted the studio to announce it had opened a formal investigation.

Earlier today Warner Bros issued a statement claiming Fisher had not co-operated with the investigation, hindering attempts to discover the truth.

It said: “While Mr. Fisher never alleged any actionable misconduct against…