The bombers behind the 11 March train blasts in Madrid planned more attacks in the Spanish capital, it has emerged.
More than 190 people died in the 11 March bombings
Documents found by police in a flat of several suspects showed that a school, a Jewish hotel and a recreation centre were among the targets.
The suspects blew themselves up in April when police tried to arrest them in the flat in a Madrid suburb.
The classified documents became public after MPs investigating the attacks requested them from police.
The police documents list three potential new targets in and around Madrid, the BBC's Katya Adler in the Spanish capital reports.
They included the Jewish recreation ground Masada, the Synagogue Hotel and the Brains school, attended by some British children, in an upmarket Madrid suburb where the family of the footballer David Beckham rented a house.
This detailed information as to possible future attacks though was kept under wraps, our correspondent says.
At the time, Spaniards were told of the explosives and detonators found in the wreckage of the suburban flat.
The classified information became public after the parliamentary committee examining the events leading up to and immediately following the bombings requested a number of police and government documents relating to the attacks.
Ten bombs exploded on four trains in and near Madrid's Atocha station on 11 March, killing 191 people.