The Basque separatist organisation, Eta on Friday announced its plans to lay down arms and reveal stockpiles of weapons, reported Le Monde.
In 2011 Eta renounced its armed struggle for independence of a Basque homeland spanning across Northern Spain and Southern France.
Eta plans to complete the disarmament by April 8, ahead of the first round of the French presidential election.
The Spanish government reacted to the news with caution.
“Eta has to do two things: disarm and dissolve itself,” a government spokesperson was quoted by The Guardian as saying.