Spain on Saturday demanded that Basque separatist group ETA apologise for decades of violence and then disband "definitively" after it provided France with a list of arms caches to finalise a promise to disarm.

In a statement, Prime Minister Mariano Rajoy said the arms cache move signalled the "definitive defeat" of ETA, blamed for 829 deaths dating back to 1968. He reiterated the group could expect no government favours as a result.