Authorities in Spain have arrested three Moroccan men for their alleged roles in last year's deadly Madrid train bombings.

Police said Tuesday the arrests took place Monday, two in the capital, and a third in the southern city of Grenada.

Police say the men are suspected of trafficking weapons and drugs to help finance the terrorist attack, and of supplying weapons to those responsible for carrying out the bombings.

The March 11, 2004 commuter train bombings killed 191 people and wounded nearly two thousand others. Spanish authorities already have jailed at least 25 people in connection with the case.

A group claiming affiliation with al-Qaida took responsibility for the attack.

Some information for this report provided by AP, AFP and Reuters.