Two girls — a 12-year-old and a 13-year-old — were found dead after officials said they tried to subway surf the J train in the Brooklyn borough of New York City.

Subway surfing is a very dangerous game where young people, mostly boys, climb onto the top of subway trains in order to ride on top for thrills and social media popularity.

'We are struggling to process this immense grief, and we are turning to our community for help to give Zemfira the respectful and loving farewell she deserves.'

Sadly, the mother of Zemfira Mukhtarov, one of the girls killed, told WABC-TV that she found out her daughter had been killed when she saw a news report and noticed her daughter's skateboard in the report.

"I was like, 'That's her skateboard, and that's her Coach bag. That's her,'" Mukhtarov's

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