[HIGHLIGHTS] A lifeless body is found in the ruins of the collapsed building in Iowa and the search continues for two missing

The body of Branden Colvin Sr., 42, was found Saturday, the same day his son graduated from high school. The family had been at the site of the collapse throughout the search, waiting for a miracle.

Two other men — Ryan Hitchcock, 51, and Daniel Prien, 60 — are still missing. A report by a structural engineer just days before the collapse said a 100-year-old wall was at imminent risk of falling.Documents show officials and the building's owner were warned for months that parts of the structure were unstable.