Another Market Basket board member and ally of CEO Arthur T. Demoulas, who was placed on leave in May, has been ousted amid an ongoing family feud involving the grocery chain, he said.

Former top executive Bill Shea said he was removed from the board by Demoulas' three sisters for demanding more information on the allegations against the CEO – in particular, the claim that Demoulas planned to lead a work stoppage.

"That’s not a threat, it’s a duty that I had – to get to the bottom of why they had so publicly decapitated this incredibly successful company, removing its management," Shea said in a statement.

Shea served on the company's board of directors for 26 years, taking over as chairman in 1999, he said.

He said the remaining board members – Jay Hachigian, Steven Collins, and M

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