A 15-YEAR-OLD schoolgirl died after going to bed without telling her parents she'd been stabbed in a mass brawl.

Elizabeth Kindsfater was knifed in the chest in a fight with other teens in the city of Yekaterinburg in the south-western Russian region of Sverdlovsk Oblast.

2 Elizabeth Kindsfater died after being stabbed in the chest Credit: Central European News

According to local media the brawl involving three groups of boys and girls resulted in Elizabeth and another boy being stabbed.

The 15-year-old managed to make it home but did not want to tell her parents she had been in a fight.

She hid her injuries as she disappeared upstairs.

Her devastated parents found unconscious in her bed later that night and she was rushed to hospital.

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Despite the efforts of medics she was pronounced dead shortly after arrival.

Police have since arrested a 16-year-old boy on suspicion of murder.

A police spokesperson said: "For now, we have reason to believe that the schoolgirl was killed because of animosity between the victim and the suspect after she insulted him."