Note to Jose Zapatero: how’s that appeasement thing working out for you? Shooting, Blast Reported During Madrid Police Sweep.

MADRID (Reuters) - Shooting and an explosion were heard on Saturday in a Madrid suburb where police were hunting for suspects in last month’s Madrid train bombings, Spanish media reports said.

A Reuters photographer at the scene heard the explosion and said a number of ambulances rushed to the scene.

An Interior Ministry source confirmed an operation was under way in the southwestern Madrid suburb of Leganes to hunt for suspects in the suspected al Qaeda-linked train bombings on March 11 that killed 191 people.

The source declined to provide further details.

News agency Europa Press said police were trying to arrest three people who had taken refuge in a block of flats.