A US supporter of the right-wing extremist conspiracy movement QAnon killed his two young children because, in his opinion, they were “monsters” and had “snake DNA” in them.

Matthew Taylor Coleman testified, according to the FBI, that he knew he was breaking the law.

But killing his children was "the only way to save the world".

The 40-year-old was reportedly charged on Wednesday in California. According to the documents submitted by the FBI, he had traveled to Mexico with his two-year-old son and ten-month-old daughter and killed them with a harpoon rifle in Rosario, a place on a beach about 30 minutes south of Tijuana. According to the Mexican police, the son was stabbed 17 times and the daughter 12 times. Witnesses who found the bodies told the Baja California media that they believed the murders were part of a satanic ritual or sect. On his return to the USA, the QAnon supporter was arrested - the children's mother had alerted the police.

When questioned, Coleman said he was "enlightened by QAnon and Iluminati conspiracy theories and had visions that his wife had snake DNA and passed it on to the children."

That is why he believed that the children would “develop into monsters” and kill them.

According to the online edition of the Los Angeles Times, Coleman runs a surf school in Santa Barbara, California.

American law allows the prosecution of murders committed in another country as long as the accused and victims are US citizens and the accused has left the country in which the crime was committed. However, the law is rarely applied and has to be approved at the highest level of the Justice Department. This has happened twice in San Diego in recent years, writes the Los Angeles Times.

QAnon includes a number of crude conspiracy theories. Among other things, his supporters believe that former American President Donald Trump is fighting a state of satan worshipers, which includes prominent Democratic politicians and celebrities, Hollywood stars, who keep children trapped in underground tunnels, rape them and drink their blood to rejuvenate themselves . The name of the movement stands for its originator, Q. Anons are called its followers. The theory is deeply anti-Semitic, it uses the age-old stereotype of the Jew who murders children. The group has millions of members on Facebook. Her followers can not only be seen in the USA, people who associate themselves with QAnon also take part in demonstrations in Germany.