Four-year-old twin brothers died of suffocation after they fell asleep in their wooden toy chest in the middle of the night, reported Daily Mail.

Their mother, Sadie Myers, confirmed the twins’ death in a heart-wrenching Facebook post. “Not many will know the pain of losing two children at the same time and losing them in a way that makes no sense, but I have to believe that something in this universe chose them specifically, maybe to protect them from some future tragedy,” she wrote.

In the post, she warned parents that the toy chests become ‘air tight’ and ‘soundproof’ when it closes. She urged parents to destroy it immediately.

Aurora, a girl, and Kellan, a boy were taken to bed by their father Don Starr but late at night on August 25, they decided to snuggle up in a box used to keep their toys.

After closing the box they were unable to get oxygen and due to suffocation they were found dead, their arms wrapped around each other and their older brother assumed they were still asleep.

Their mother said the twins routinely woke up at odd hours and she would find them sleeping in various places in the morning with toys scattered across their shared room.

“Friday night, the weird place they decided to snuggle up and go to sleep in their cedar toy chest that we use to store all their stuffed animals,” she wrote.

She said when she woke up on Saturday, she thought that her twins were still sleeping but her husband went to check on them when the family realised that something had gone wrong, All immediately started panicking, yelling for them up and down the street, then her older son, Axton, yelled “Mommy I found them! They are so silly just sleeping in the toy box.”

“I knew something wasn’t right, but I also quickly realized it was already too late. It makes no sense to me and never will.”

“They have been with the family for the past week because we don’t want to emotionally scar them by seeing us like this, and they need to be away from all the triggers that could cause them to be in our same state,” Myers wrote.

A non-profit organization called Kids in Danger has revealed that at least 34 children have died in incidents involving toy chests since 2014, according to data from the US Consumer Product Safety Commission.

More than 21,500 toy chests have been recalled since 2005 due to hazards including strangulation, entrapment, injury, and lead poisoning.