A quake in a mine in Silesia left four miners injured.

Four people were injured in a tremor that occurred around 3:30 a.m. at the Staszic Wujek - Ruch Murcki Staszic mine, the Polish Mining Group announced. It added that nine people were in the area affected by the tremor, all of whom made it to the surface on their own.

"The injured people were mine workers who were carrying out preparatory work. The miners, suffering from contusions to the head, chest, arm, and knee, among other injuries, were taken to hospitals in Ochojec and Murcki. The most important information is that none of these people's lives are in danger!" PGG said in a statement.

More information coming soon.