UFO theorist dies after vomiting black liquid

Just days after texting his mother to "investigate" if anything bad happens to him, a conspiracy theorist has been found dead.

The body of Max Spiers, a 39-year-old father of two, was discovered in Poland where he was visiting to talk about UFOs, according to The Sun.

Spiers friends claim he was vomiting black liquid when he died at the apartment in Warsaw.

Officials say he died of natural causes, but they refused to do an autopsy on his body.

His mother, Vanessa Bates, told The Sun that his dark investigations into UFOs and government coverups have made him enemies that would want him dead.

Before Spiers died, he texted Bates: "Your boy's in trouble. If anything happens to me, investigate."

Bates said he was making a name of himself in the industry.

"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," she told The Sun.

According to the Sun, he was probing into the lives of well-known figures in politics, business and entertainment.

Online followers are certain his death had something to do with that.