The post-mortem report of Russian MP and millionaire businessman Pavel Antov indicates that he died of internal injury after a fall while his fellow traveller Vladimir Bidenov’s death was due to a heart attack, police said on Wednesday.

Antov died after allegedly falling from the hotel’s third floor here on December 24 while Bidenov was found dead in his room on December 22.

Dr Lalmohan Routrai, chief district medical officer (CDMO) of Rayagada, said the post-mortem of Bidenov, 61, was conducted at the District Headquarters Hospital on December 24. The post-mortem of Antov, a critic of Russian President Vladimir Putin, was done on December 26. The viscera of Bidenov has been preserved, but not Antov’s, the CDMO said.

Routrai said the post-mortem reports had been submitted to the police. The viscera will be sent to the forensic laboratory in Bhubaneswar.

The post-mortem report of Antov states that “he sustained a severe internal injury after falling from the third floor of the hotel”, the police said, adding that Bidenov’s report says “he died of a heart attack”.

The other two co-travellers, Pansasenko Natalia, 44, and Turov Mikhail, 64, along with the tour guide turned up at the crime branch headquarters in Cuttack on Wednesday for questioning. Natalia and Mikhail have been asked not to leave the state.