Complex sentence: Los Trece (The Thirteen) are a group of people that is prosecuted in Ecuador as accused of being terrorists, accusation made after the events of the crisis of the 30 September 2010.
Split into simpler sentences: Los Trece (The Thirteen) are a group of people who were prosecuted in Ecuador on charges of terrorism. The accusation was made after the events of the crisis of the 30 September 2010.