According to a Spanish Interior Ministry statement, Villota, who is originally from Bilbao, has lived with false documents in the UK and has been "waiting for instructions" from Eta.
The Ministry says Villota was recruited in 1990 to join the legal Matalaz Command, under the Command Vizcaya.
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More cloud and higher risk of showers on Sunday, feeling cooler. High pressure in control into next week with many areas fine and dry.
Generally dry and settled. Cloudier with showers on Sunday.
The drummer, who just released a new album called Postcards From Paradise, is being recognised for his solo music career.