The search for three people missing after the collapse of Didcot Power Station is being hampered by safety concerns over the "unstable" section still standing, fire officials have said.
Assistant chief fire officer Simon Furlong said an expert from Cheshire had been called in to advise on how best to proceed in the search.
The remainder of the building is very unsafe which is hampering search. This is a very difficult situation with a very unstable structure.
The safety of emergency service personnel has to remain our priority, while recognising how hard this must be for families waiting for news of loved ones overnight. Our sympathies are with them, and the family of the person who died here yesterday.
An expert from Cheshire with similar experience is due on site today to advise on the search.
The investigation into what happened could take several days, he added.
Frustrated families of those missing since the power station collapse two weeks ago say they are heartbroken that rescue work has halted.
A biker group in the North East has paid tribute to 'Whitby' Mick Collings, who is thought to have died in the power station collapse.
One person has died and three others are still missing after a building collapsed at Didcot Power Station yesterday.