In a letter sent to the government, the local mayor in Remedios said the mine was unlicensed.
US Attorney General Pam Bondi says federal agents are responding to the scene.
One woman said she cowered in her home waiting for gunmen to enter and "decide whether we should live or die".
The singer had recently enjoyed a career resurgence after her 1960s song Pretty Baby went viral.
The US president has been diagnosed with chronic venous insufficiency, according to the White House.
The move "is purely a financial decision against a challenging backdrop in late night [television],".
It's unclear if Trump is authorising the public release of these documents.
She succeeds Denys Shmyhal who will now be in-charge of the Ministry of Defence
The latest deaths take the nationwide toll to nearly 180 since the monsoon started in late June.
