Polish 'secret lover' of British conspiracy theorist, 39, who died after throwing up two litres of black liquid in her flat is quizzed by police for 'manslaughter' seven months after coroner ruled he died from natural causes 

The suspected Polish lover of a British conspiracy theorist who vomited two litres of black fluid before dying suddenly in Poland has been questioned by police on suspicion of manslaughter seven months after a coroner ruled that he had died from natural causes. 

Father-of-two Max Spiers was found dead in Warsaw, Poland, July 2016 

Monika Duval, who is said to have secretly been romancing Max Spiers while his girlfriend Sarah Adams was in Britain, was this week quizzed after the mysterious death of the father-of-two in the Pole's flat in July last year.

Polish prosecutors did not reveal why they suddenly opened an investigation into involuntary manslaughter or if any new evidence has come to light. 

They are quizzing science fiction writer Duval, who was present at the time of his death, and said they have no plans yet to question anyone else.

Lukasz Lapczynski, prosecutor in Warsaw, said: 'At this stage we have determined that the ambulance arrived at the request of Mr Spiers's partner.

'Our initial investigation indicates that it was Mr Spiers's partner [who called the ambulance], but the nature of this relationship is unclear.'

He told the BBC: 'The nature of this relationship will be determined during the investigation.

'The doctor started resuscitation which was not successful. As a result of the doctor's decision, the police weren't involved in conducting additional procedures.

'The information about Max Spiers's death reached the prosecution office on August 30 when the body had already been transported to the UK. We couldn't do a post-mortem which is essential in such cases.

Spiers (centre) with suspected lover Monika Duval who is being quizzed by police over his mysterious death 

'The prosecutor told me he plans to interview everyone that was present when Max died. We know Monika was there, but it's unclear who else was around.'

He was ruled to have died from natural causes by Polish authorities despite no post-mortem examination being carried out on his body.

An inquest at Canterbury Coroners opened in December after his body was repatriated but a second post-mortem at the Margate QEQM Hospital, Kent, was unable to determine how he died.

 Spiers had only known Duval for three months before his death and had recently returned to Poland after a holiday to Cyprus with her. 

Lukasz Lapczynski, prosecutor in Warsaw, confirmed that investigation into his death is being opened 

Spiers with his mother Vanessa Bates who also believes that her son's death is suspicious 

The conspiracy theorist, who believed governments have covered up contact with Extraterrestrials, texted his mother to say 'If anything happens to me, investigate' just days ahead of his mysterious passing.

In one of his final social media messages he wrote, in a reply to a friend who asked how he was: 'I'm good, I am just wayyyyyy too tired.'

Spiers' mother, Vanessa Bates, 63, after her son's death said there were a number of people who wanted him dead due to his bid to uncover supposed government secrets. 

Vanessa said: 'He was making a name for himself in the world of conspiracy theorists and had been invited to speak at a conference in Poland in July.

Bates by Spiers' grave in Canterbury. She said he was 'exposing' who was 'dangerous in the world of government [and] the entertainment world'

'He was staying with a woman who he had not known for long and she told me how she found him dead on the sofa.

'But I think Max had been digging in some dark places and I fear that somebody wanted him dead.'

Spiers was a UFO conspiracy theorist who believed that the governments had been in contact with alien life 

Leading up to his death, Spiers, who hails from Canterbury in Kent, was said to be probing into the lives of well-known figures in politics, business and entertainment.

Conspiracy theorists have long been convinced that UFO chasers who get too close to the truth are 'bumped off' by the secret services or so-called 'Men in Black'.

On one UFO news portal, Project Camelot, a blogger wrote: 'The entire circumstances are suspicious and I urge everyone to encourage the release of details about what really happened and call for an autopsy.'

Vanessa, who works as an English teacher, added: 'Max was a very fit man who was in good health and yet he apparently just died suddenly on a sofa.

Spiers had been working with science fiction writer Madlen Namro and Duval, who he is also believed to have been staying with while in Poland

The type of relationship he had with Duval is unclear as it was believed Sarah Adams, 31, was his girlfriend at the time.

Speaking soon after his death Adams stated: 'He was terrified, he wanted to leave. He rang secretly as they wouldn't let talk. He said they were trying to get away from them.'    

He had gone to Poland give a talk about conspiracy theories and UFOs.         

Spiers with his girlfriend Sarah Adams, He was also penned to speak at a conference in Wiltshire in August 2016 but died weeks before