According to the Spanish interior minister, the Tunisian identified by the Spanish government as the ringleader of the March 11 bombings in Madrid was among four suspects killed yesterday in the explosion in Laganes, on the outskirts of Madrid.

The suspects, chanting in Arabic, set off the blast while police were pursuing them Saturday night at a four-story apartment building, Angel Acebes said.

One Spanish police officer was also killed and 11 were wounded, Acebes said. Three are still in hospital.