
Rescuers were trying to freesevenmineworkerstrappedafter an accident on Friday in a coal-producing region in northernMexico, authorities said.
Initial investigations suggest thecollapsewas due to a flood at theminein the municipality of Muzquiz, the state of Coahuila's labour department said.
Also Read |Mexico to ease capital lockdown, resume quake drills
"Some people who were working weretrappedinside themine," it said in a statement.
Police and civil protection authorities were at the scene for the rescue effort, it added.
The National Guard said on Twitter its personnel "were deployed in the area to provide security and allow the rescue oftrappedworkers."
Also Read |Mexican law halts US from turning back some migrant families
Coahuila, the country's main coal-producing region, has seen a series of fatalminingaccidents over the years.
The worst was an explosion that claimed 65 lives at the Pasta de Conchosminein 2006.
The bodies of 63 of the miners are still at the site and the families have repeatedly appealed to the Mexican authorities to recover them.