Variety obtained screenshots from Facebook, which alleged that Stallone told the director: ‘What the f**k is happening with these f**king ugly background’ – referring to the extras.
‘He and the director proceeded to call certain people terrible names and laughed at them.’
Stallone is also thought to have requested that production find ‘pretty young girls to be around me’.
A Facebook profile for Rose Locke Casting refers visitors to CL Casting, where a letter posted on April 7 acknowledged that they had departed the project but provided no explanations or reasons for their departure.
‘We wanted to send you an update on the happenings here in our casting world,’ it read. ‘We have chosen to part ways with Tulsa King. We will be finishing up next week and the 12th will be our last day.
‘We send well wishes to whomever takes over the show. We thank all of you great background artists for your continued support.’
According to a show source, they only recently became aware of the posts and are investigating the accusations.
They also stated that those participating were attempting to recreate sequences from the previous season for artistic reasons.
Although Stallone has yet to speak out over the reports, director and executive producer Craig Zisk refuted the claims when approached by TMZ.
He informed the magazine that there were no obscenities flung on set and that the lead actor never mentioned being surrounded by ‘beautiful chicks’.
He also said that Stallone’s wife, Jennifer Flavin, was there throughout filming.
In the first season of Tulsa King, Stallone’s character, Dwight Manfredi, was moved from New York to Oklahoma after being released from jail.
He was charged with establishing a new criminal syndicate in the state, but each episode concluded with the crime leader in handcuffs.
Despite being a fixture on our screens for many years, Stallone admitted that the process of filming a TV programme was more difficult than he expected.
‘It’s beyond tough. I can’t believe some people have done this for four, five or six seasons,’ he previously told Variety. ‘It’s brutal, compared to filmmaking. I’ll never say, “This is a hard shoot” again on a feature. It’s a vacation compared to this! It really is!’