(CNN) Two day care workers in St. Louis have been charged with crimes after a 2016 video of a "fight club" featuring young children surfaced, a court official said.

The children were 3 and 4 years old, St. Louis Circuit Attorney Kim Gardner's spokeswoman, Susan Ryan, told CNN Wednesday.

Mickala Guliford, 28, and Tena Dailey, 22, were charged with endangering the welfare of a child, a felony, according to probable cause statements from prosecutors.

Mickala Guliford, left, and Tena Dailey

The women directed at least six children to have fistfights, the state alleges, noting that the children wore a padded glove and used it to hit each other's heads and bodies.

Video shows at least six children fighting over 35 minutes, according to prosecutors.

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