The board of grocery store chain Market Basket voted unanimously Tuesday evening to fire President and CEO Arthur T. Demoulas, months after placing him on leave .

Demoulas met with the board in mediation on Sept. 3 and Sept. 9, but both sides apparently could not reach a resolution.

“We assure our valued associates and customers that, as we have demonstrated over the past several months, Market Basket will not change its operations, profit-sharing, bonuses or culture, and will continue to offer the best groceries at the lowest prices anywhere in New England—well into the future,” said Board Chair Jay K. Hachigian in a statement.

Read more: Market Basket drama — Deli, devotion & doughnuts: Why we care so much | John L. Micek

Demoulas and two other company executives were placed on

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