Three missing people have been found alive in an abandoned coal mine in West Virginia, according to numerous media reports.

>> Read more trending news

Erica Treadway, 31, Kayla Williams and Cody Beverly, 21, went missing four days ago after entering the Rock House Powellton Mine in Raleigh County, WHSV-TV reported.

A fourth person, identified as Eddie Williams, 43, managed to make his way out of the mine on his own Monday night, according to WSAZ-TV.

A spokeswoman with the West Virginia Department of Commerce told WHSV that rescue operations were underway Wednesday evening and that all three people were expected to need medical treatment after they were rescued.

It’s still unknown why the group went into the mine to begin with. Sheriff official said entering an abandoned mine in the state is illegal.