Rescuers in Mexico, including dozens of soldiers, are working desperately to reach 10 miners trapped in a flooded coalmine following the collapse of an inner wall.
Three miners had been rescued and hospitalised, the security and citizen protection ministry said in an update on Wednesday at the mine in the Sabinas municipality of the northern state of Coahuila.
Television footage showed family members outside the mine clamouring for information on the missing men.
"I hope we find them safe," Mexican President Andres Manuel Lopez Obrador said earlier on Twitter.
Lopez Obrador had said nine miners were likely to be trapped, but authorities revised the number later.
Some 92 soldiers were working at the scene, as well as specialists and rescue dogs, the president said.
The labour ministry said it had not received any complaints about safety at the mine, which began operations in January.