London, Jan 14 (IANS): British police are now looking at "underlying health issues" after a post-mortem examination of Oxford professor Steven Rawlings failed to pinpoint the exact cause of his death in the home of an Indian-origin mathematician, a media report said.
Daily Telegraph said that police are looking at any underlying health issues that the professor may have had.
The body of Rawlings, a 50-year-old astrophysicist, was found at the home of Devinder Sivia in Oxfordshire Wednesday.
Sivia spent over 24 hours in custody but was released after detectives said it was possible the death had not been the result of any foul play, the media report said.