The body was recovered during the ongoing evacuation of debris from the site on Monday.
The Federal Capital Territory Administration and the National Emergency Management Agency had on Saturday ended the rescue operation at the site after six persons and one dead body were evacuated from the building on Friday.
But relatives of the victims had protested the decision of the government, insisting that about 18 workers were still trapped under the rubble.
They were dispersed by policemen who fired tear gas and shots into the air.
The rescue team consisting of officials of FCT Emergency Management Agency, National Emergency Management Agency, firefighters and Julius Berger Plc ended the rescue operations around 8am after they failed to find victims.
But the youths who were annoyed by the removal of the payloaders and other equipment attempted to take over the site, insisting that many victims were still trapped under the debris and should be rescued.
The Coordinator, Abuja Municipal Metropolitan Council, Umar Shuaibu, had explained that the rescue workers could not find any signs of life or body, adding that they deployed the necessary equipment for the job.
He disclosed that only one died out of the seven victims that were rescued, insisting that no other casualty was discovered during the overnight rescue operation.