By John Irish PARIS (Reuters) -Ivory Coast opposition leader Tidjane Thiam said on Wednesday he would fight on to run in the West African nation's presidential election due in October despite having been removed from the electoral roll.

An Ivory Coast court’s decision to remove Tidjane Thiam from the voters’ roll effectively disqualified the former Credit Suisse chief executive officer from this year’s presidential election, raising the risk of political instability in the world’s biggest cocoa-producing nation.

A court in Ivory Coast ruled on Tuesday that Tidjane Thiam, a former CEO of Credit Suisse, is not eligible to run for president because of his dual Ivorian-French nationality, according to a lawyer representing him.