The body of a man was recovered one day after a massive fire tore through a building in Pittsburgh’s Sheraden neighborhood Saturday morning.Pittsburgh police and fire officials were first called to a building located in the 700 block of Hillsboro Street just after midnight Saturday, following reports of a two-alarm fire. Officials said when they arrived on the scene, flames were coming from the second floor of the building. As firefighters worked to contain the fire, they said the building partially collapsed, causing the roof and third floor to fall onto the second floor of the structure.Firefighters said they established a fire watch at the scene and extinguished two flare-ups, one that occurred at 4:45 a.m. and another at 7:20 a.m. on Saturday.Police later utilized drones to initiate a search and rescue operation after they said a man was believed to have been inside when the fire broke out. They said their search on Saturday was unsuccessful and that the building would be prepared for demolition. On Sunday, crews were seen with machinery beginning to demolish the structure.A spokesperson for Pittsburgh Public Safety later said that the man reported to have been inside was found dead as crews worked to tear the building down. Officials said the man was found just before 3 p.m.Action News 4 was on the scene when the county medical examiner arrived. It is unclear what led to the fire. An investigation is now underway. Download the WTAE app to stay connected with breaking news. Sign up for our email newsletters to get breaking news in your inbox.