Spain ? Three Moroccans accused of helping plan the 2004 Madrid train bombings denied involvement in the attack and condemned violence of any kind in testimony on Friday.

Among those taking the stand was the man prosecutors say appears in a video claiming responsibility for the explosions, another with alleged ties to a North African terror group and a third who witnesses say placed some of the backpack bombs on packed commuter trains.

The men denied any knowledge of the attack and said they were not connected to the other alleged ringleaders. They said police had intimidated relatives into incriminating them, and said authorities were relying on witnesses who recognized them from television footage, rather than the scene of the March 11, 2004, bombings.

Twenty-nine suspects are on trial for their alleged roles in the rush-hour attacks, which killed 191 people and left more than 1,800 injured, many paralyzed or having lost limbs.