The horrific final moments of twin toddlers who were killed by their mother after a terrifying mistake have not been revealed.

According to reports from local media outlets, the kids’ grandma detailed how one of the twin toddlers became blue, and then shortly after that, both died.

This had to do with the fact that they were allegedly exposed to their mother’s fentanyl haul.

La Tina Allen choked back her tears while recalling how she had performed CPR on her 3-year-old grandchildren named Josiah and Jestine. They were also lovingly known as Jojo and Juju.

Allen further detailed how her daughter was at Canoga Park in California during the afternoon hours when all of a sudden, she heard little James screaming for assistance.

The older twin named Josiah was not moving despite a lot of attempts made by his brother to wake up him.

The grandmother explained how the mother’s voice was silent and she became numb and didn’t know what to do. She grabbed her little child but he was already blue.

911 was called and since the mother and grandma were so focused on one child, they failed to notice how the other one also started to get blue. And by the time assistance arrived, it was too late. They had passed away, despite all attempts made to revive them.