A 12-year-old New York boy who was critically injured when he lit himself on fire Tuesday night did it as part of a dangerous YouTube stunt called the “fire challenge,” police sources said.

The boy was at his home in Queens, a borough of New York City, around 8:30 p.m. when he splashed himself with rubbing alcohol and set himself ablaze while standing in the bathtub, sources said.

He was supposed to extinguish himself with water in the shower but was unable to do so, according to sources.

The boy suffered third-degree burns covering more than 40 percent of his body, officials said.

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