Police believe they have found one of the two men who have been missing since the boiler house collapsed at Didcot power station in February.
The families of the remaining two demolition workers Ken Cresswell, 57, and John Shaw, 61, both from Rotherham, South Yorkshire, have been informed.
Thames Valley Police said they are being supported by specially trained officers.
The body, which was found earlier today, has not yet been formally identified.
Contractors working at the site have "paused" the removal of debris so that specialists from Thames Valley Police, Fire and Rescue's Urban Search and Rescue (USAR) team and the South Central Ambulance Service Hazardous Area Recovery Team (HART), can enter.
The body of a third man, Christopher Huxtable, 34, of Swansea, who had also been missing since the partial collapse, was recovered at the power station on August 31.
The building was previously too unstable to be approached and a 50-metre exclusion zone was set up around the site.
A police spokesman said there will be a "safe recovery of the body" followed by a victim identification process.
He said: "Our thoughts remain with the families of Ken Cresswell and John Shaw and we would ask that their privacy is respected during this incredibly difficult time."