According to report, Sarna died due to shock and hemorrhage caused by head injuries. There were major injuries on his private parts also.
Sarna died Sep 13 in hospital after being taken there in a bleeding condition from an apartment complex in south Delhi, police said.
The head injuries of Sarna were caused by a blunt object or force sufficient to cause death in ordinary course of nature, said the source.
According to the autopsy report, the body of the student from the US had turned pale and stiff and there were blood stains over his face.
Police said injuries to Sarna's private parts might have been caused when he himself rolled on the road after creating ruckus following a party in the apartment complex.
"He dragged himself on the road...which might have caused the injuries," Deputy Commissioner of Police P. Karunakaran told IANS.
Doctors at All India Institute of Medical Sciences conducted the autopsy on Sarna Sep 14.
Police said Sarna's internal body samples have been preserved for analysis.
He was allegedly beaten up by two security guards in Kalkaji's South Park Apartments after he created a ruckus.
Police have arrested four of his friends for drug abuse and the two security guards for assaulting him.
Karunakaran claimed Sarna and his four friends started consuming a powerful drug inside the flat of one of them around 9 p.m. and around 11 p.m. the NRI student became violent and started shouting and behaving abnormally due to a suspected drug reaction.
Sarna's family, who have reached Delhi from their home in the US, have demanded a Central Bureau of Investigation inquiry into his alleged murder.
--IANS (Posted on 19-09-2013)