Eight missing after building collapses in Colombia From Nelson Quinones, CNN October 13, 2013 -- Updated 0912 GMT (1712 HKT) Rescue personnel work at the scene of the 22-story building collapse in Medellin, Colombia. The building collapsed Saturday night in Medellin city Just before it tumbled, officials evacuated 24 families after they noticed cracks (CNN) -- A 22-story residential building collapsed in Colombia's second-largest city, leaving two people injured and eight missing, authorities said early Sunday. The building collapsed Saturday night in Medellin city, according to Claudia Patricia Restrepo, the temporary mayor. Officials evacuated 24 families from the building Friday after they noticed cracks. Construction workers inside the building at the time of the collapse were among the missing, according to the mayor. After the incident, authorities evacuated residents of nearby buildings as a security measure. Restrepo said police, the fire department, psychologists and the Red Cross are at the site.