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.
Fresh aerial images show the scale of the destruction caused by the collapse of the disused Didcot Power Station.
Mountainous piles of rubble dwarf the diggers and other equipment being used to dig through the debris, as the search for three people who are still missing continues.
Fire officials today said search dogs had found "some signs" of life beneath the rubble, and said they were still hoping to find survivors - but warned the signs had not been "significant".
Search efforts have been hampered by the unstable nature of the structure still standing.
One person was killed and five others needed hospital treatment when the power station building came down yesterday.
Investigations into what caused the collapse may take weeks, officials have said.
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.