Five girls in Poland died Friday after a fire broke out in an escape room where the teens were playing, the BBC reported.
The girls, all 15, were celebrating a birthday party when the blaze broke out in the attraction, located in the northern city of Koszalin, according to the BBC.
A 25-year-old man was seriously injured with severe burns, CNN reported.
Escape rooms are popular around the world. Participants are locked in a room and must solve a series of puzzles to escape.
Officials have not determined what caused the fire, the BBC reported.
Polish President Andrzej Duda wrote on Twitter that the fire was an "appalling tragedy."
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