It is "highly unlikely" that three people still missing in the rubble of the Didcot Power Station collapse are still alive, officials have said.
The search has been hampered by the "unstable" section still standing, they added.
The station closed in 2013 and was in the process of being demolished when it collapsed yesterday, killing one and injuring five.
The Didcot Power Station collapse was "a big accident waiting to happen", one former worker at the plant has told ITV News.
Vendel Segesdy said he suspected the station wasn't a "solid structure" when looking at it from nearby last week.
Mr Segesdy, who worked at the station from 1969 until it closed in 2013, said: "I thought if they've not taken a lot of the heavy plant out of there it's just going to fall in on itself."
He added: "That's what I believe that's happened, is that they've done work and it's left it like a pack of cards ready to fold."
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.