The incident was reported Wednesday afternoon, when the miners encountered an abandoned tunnel with water that flooded the mine, authorities said.
Rescuers managed to extract five people from the mine on Wednesday, and are now working to pump water out of the flooded area, according to National Coordinator of Civil Protection, Laura Velazquez, who is overseeing the rescue operation.
"We have not slept, we are working day and night, uninterrupted," said Velazquez on Thursday.
"We are strategically putting pumps in each of these wells to be able to extract the greatest amount of water and have immediate access to the mines and rescue the miners as soon as possible," she said.
Relatives of a miner cry.
Early on Thursday morning, six special forces divers joined the rescue operations, General Agustin Radilla said. There has been no update on their findings as of yet, however.
"They say the water is rising...I want my husband to come out all right," said the wife of one trapped miner, Erika Escobedo, to Reuters.
She told the news agency that she had spent "all night watching rescue efforts at the site."
Governor Miguel Riquelme, of Coahuila and Zaragoza state, traveled on Thursday to the municipality of Sabinas where the mine is located.
"Five water extraction pumps totaling 150 horsepower are currently working and other submersible pumps are being installed, which are being sent by companies in the region and thus continue with the rescue efforts," he wrote on Twitter.
Mexican soldiers do rescue work at the coal mine.
Sabinas is no stranger to mining tragedies. In 2006, an explosion in a local mine killed 65 people. In 2011, 14 miners were trapped and confirmed dead following another mine blast in Sabinas.