A conspiracy theorist who died while trying to expose government cover-ups vomited two litres of black fluid before collapsing, a British inquest has been told this week.
The Mirror reports Max Spiers, 39, visited Poland to speak at a conference before he died on a sofa 24 hours later.
Days before his death on July 16, the father-of-two sent a chilling text message to his mother, Vanessa Bates, saying: "Your boy's in trouble. If anything happens, investigate."
The inquest into his death, at Canterbury coroner's court, was told a post-mortem examination was unable to determine how he died.
Polish authorities had previously dismissed his death as being down to natural causes - despite no initial post-mortem examination.
A world renowned conspiracy theorist from Canterbury in the UK, Spiers was a former classmate of Orlando Bloom.
He lived in the United States for a few years, but had returned to the city to stay with his mother, before jetting off to Poland.
Spiers had visited Poland after holidaying in Cyprus with a friend, who later discovered his body.
In a statement, coroner's investigations officer Caroline O'Donnell said: "When they returned, Mr Spiers became ill with a high temperature and was weak," the Mirror reported.
"The following day, Mr Spiers vomited two litres of black fluid.
"The friend called a doctor who attempted resuscitation before pronouncing him dead."
Ms Bates previously said her son had been making a name for himself in the world of conspiracy theorists.
"But I think Max had been digging in some dark places and I fear that somebody wanted him dead," she said.
Coroner Alan Blunsdon told the court he was still awaiting a report from Polish authorities.
He also hopes to secure funding to have Mr Spiers' laptop and mobile phone forensically analysed.
The inquest continues.