French Casino Guichard-Perrachon (CGUSY, CO.FR) submitted Wednesday a counter-claim against Brazilian businessman Abilio Diniz in an existing arbitration procedure.

Casino, which controls Brazil's largest retail group, Grupo Pao de Acucar (PCAR4.BR, CBD), or GPA, seeks a declaration that Mr. Diniz's election as chairman of food company BRF-Brazil Foods S.A. (BRFS, BRFS3.BR) conflicts with CBD's interest in violation of the Brazilian law and the shareholder's agreement, the French company said in a statement.

Mr. Diniz is also GPA's chairman and BRF is a major supplier to the company.

Before his election at BRF, in April, Casino wanted Mr. Diniz to resign as chairman of GPA because it saw a potential conflict of interest with Mr. Diniz holding both positions.

Created by a 2009 merger between Sadia SA and Perdigao SA, BRF produces poultry, pork, beef, processed meat and margarine. It has 65% of the Brazilian market in some segments.

Mr. Diniz has said several times he doesn't see a conflict of interest and has reaffirmed he intends to remain as chairman of GPA.

Mr. Diniz and Casino Chief Executive Jean-Charles Naouri have clashed in recent years after Mr. Diniz attempted to back out of a 2005 deal to hand over control of GPA, which was founded by Mr. Diniz's family.

Write to Luciana Magalhaes at luciana.magalhaes@dowjones.com

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