Rescue workers are scrambling to pull survivors out of the rubble after the quake struck Colombia. (AP PHOTO)Rescue workers are scrambling to pull survivors out of the rubble after the quake struck Colombia. (AP PHOTO) Credit: AAPAt least 111 people have been killed after a powerful earthquake struck western Colombia, knocking down buildings across several cities and leaving others trapped in the rubble. Colombia’s Geological Service said Monday that it had been “the highest magnitude earthquake registered in Colombia in the last decade” and that it had been followed by two 2.8 and 4.8 magnitude aftershocks. In 1999, a 6.2 magnitude quake near the city of Armenia killed more than 1100 people.