INTERNATIONAL negotiators have urged Basque separatist group Eta to put a permanent end to their 40-year campaign of violence.

Delegates including ex-United Nations chief Kofi Annan, Sinn Fein leader Gerry Adams and ex-Irish PM Bertie Ahern made the joint call at a conference in San Sebastian.

The terror group declared a permanent ceasefire in January, and despite neither Eta nor the Spanish government being of represented, hope remains that the group will publicly renounce violence.

The militants’ bid for an independent homeland has claimed more than 800 lives since the 1970s.