A major incident has been declared with at least one dead after an explosion at Didcot power station in Oxfordshire, South Central Ambulance Service said.
Thames Valley Police confirmed that officers are at the scene, along with emergency services, after a major explosion which has caused part of a building to collapse.
At least three ambulances, ambulance helicopter and several rapid response vehicles are at Didcot Power Station in Oxfordshire following the accident.
Twitter users described seeing an ‘explosion’ and ‘loads of dust’ at the plant.
Npower has said that it is investigating.
A spokesman said: “We are describing it as a major incident” adding that he thought there would be casualties.
Photographs from the scene showed part of a building missing, which appears to be the former coal-fired Didcot A, which closed in 2013.
Rodney Rose, deputy leader of Oxfordshire County Council, told the Oxford Mail: ‘I have been told there has been one fatality, but the rest is currently unknown.
‘The fire service is there now and we are still trying to find out if this was a demolition.’
Mr Rose, who sits on a committee responsible for Thames Valley Fire Service, added: ‘At the moment this is being treated as a collapsed building, not an explosion, but there was a bang.’