Debris rains down from an emergency services building in Cali, Colombia, as a powerful 7.4 magnitude earthquake rocks the region. Pieces of the structure crash

Debris rains down from an emergency services building in Cali, Colombia, as a powerful 7.4 magnitude earthquake rocks the region. Pieces of the structure crash onto ambulances parked outside while bystanders scramble away from the building. Colombia's geological service says the quake struck at a …