NEW YORK (CBSNewYork) – A fraternity and its former president are liable for the death of a Baruch College student back in 2013, a court ruled Thursday.

Chun “Michael” Deng, 19, died of blunt force trauma during a hazing ritual at a rented house in the Poconos.

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Police said he was blindfolded, forced to walk through a crowd wearing a backpack filled with 30 pounds of sand, and then repeatedly tackled. He hit his head on the ground and was knocked unconscious.

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Authorities said Pi Delta Psi fraternity members called their president, Andy Meng, for advice, but did not immediately take Deng to a hospital.

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Four members pleaded guilty in the case.