Around eleven years after a serious mine disaster in New Zealand, the remains of at least two victims have been found.
However, it is unlikely that a rescue operation will be started, the investigators said on Wednesday.
In the mining accident in the Pike River mine in November 2010, 29 people were killed.
A methane gas explosion is suspected to be the cause of the accident.
The fatalities were 24 New Zealanders, two Australians, two British and one South African.
The rescue operation had been stopped because the tunnel had collapsed and was therefore impassable.
By digging a borehole, however, the experts were now able to take pictures from the furthest corner of the mine.
According to the police, human remains were discovered there.
"At the moment we are not able to identify the remains, but we will consult with forensic experts," said Chief Detective Peter Read.
The minister in charge of the case, Andrew Little, said the bodies would be unlikely to be recovered: "I know some families would like to go further, but that will not be possible." Several relatives of the victims expressed hope that the discovery provide further information on the cause of the accident and make criminal investigations possible.
Years of struggle for justice
"We fought hard for years to get justice for our boys and this is part of it," said Rowdy Durbridge, whose son Daniel was killed in the explosion.
The recordings would provide clarity about what had happened in the mine, said Anna Osborne, whose husband was among the fatalities.
An official investigation into the 2012 incident concluded that the coal mine on New Zealand's South Island had safety deficiencies and should never have been operational.
However, the police did not find sufficient evidence to initiate proceedings against the operators of the mine.