A showdown between Mexico's largest broadcaster, Grupo Televisa, and Spanish-language media giant Univision Communications reached new heights May 10 when Univision said that Televisa chairman Emilio

(The Hollywood Reporter) -- A showdown between Mexico's largest broadcaster, Grupo Televisa, and Spanish-language media giant Univision Communications reached new heights May 10 when Univision said that Televisa chairman Emilio Azcarraga Jean has resigned from its board and Televisa has sued it for breach of a programming deal.

Disputes between the partners have been heating up over the payment of programming royalties and Univision's succession plans. Telvisa is Univision's top content supplier under a program arrangement that expires in 2017.

A Televisa spokesman May 10 confirmed a Univision filing with the U.S. Securities and Exchange Commission that said Azcarraga and Televisa executive VP Alfonso de Angoitia have resigned from their respective Univision board posts. He declined further comment.