Spain Marks 10 Years Since Worst Terror Attack

Spain is commemorating the 10-year anniversary of Europe's worst Islamic terror attack.

On March 11, 2004, terrorists targeted four commuter trains with 10 shrapnel-filled bombs concealed in backpacks during morning rush hour. The attack killed 191 people and wounded more than 2000.

Spain's King Juan Carlos and Prime Minister Mariano Rajoy joined families of victims for a church service in their memory today.

The ceremony was one of several events held around the city. Elsewhere, people laid flowers and lit candles at the train stations and sites of the bombings.

The seven alleged ringleaders of the attacks blew themselves up three weeks after the bombings as police closed in on their apartment hide-out in a Madrid suburb.

Twenty-eight people, mainly from North Africa, went on trial in 2007 and 18 were convicted of taking part in the attacks.

The terrorists who claimed responsibility for the bombings said they carried out the attacks in revenge for the Spanish government's support for the Iraq war and troop presence in Afghanistan.