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A teenage daughter of a Border Security Force (BSF) trooper has been rescued from a Jodhpur lake in Rajasthan, preventing her from becoming the latest victim of the online Blue Whale game.

The Class 10 student jumped into the Kaylana Lake on Monday night. She had the image of a blue whale carved on her arm with a knife, signifying that she completed all stages of the macabre game.

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"I saw a girl driving a Scooty around the lake. I was suspicious as it was around 11 p.m.," said Om Prakash, a handcart vendor who pulled her out from the waters.