Photo: Matthew Taylor Coleman/instagram

Matthew Taylor Coleman

In the months beforeMatthew Colemanwas arrested for allegedlykilling his children, the father of two spent an increasing amount of time online looking at conspiracy theory websites and message boards — but even those closest to Coleman had no inkling that his actions could turn violent.

“He started believing crazy things that he saw on the internet,” one of Coleman’s childhood friends, who was in touch with him a week before the killings, tells PEOPLE. “But nothing seemed violent. He just seemed to be buying a lot of stuff that didn’t make a lot of sense.”

“It started off slowly, but near the end, he deteriorated rapidly,” the friend said. “But he never once said anything to make anyone think that he’d kill his own kids. That’s another level.”

Kaleo and Roxy Coleman.Matthew Taylor Coleman/instagram

Matthew Taylor Coleman

But police say Coleman didn’t return and instead drove the children into Mexico. Two days later, authorities allege, he took the kids to a ranch, where hekilled them with a spearfishing gunand returned to his hotel a few hours later. He was arrested when he attempted to cross the border back into the United States.

Matthew Taylor Coleman.Instagram

Mathew Taylor Coleman

But a newly released affidavit further details Coleman’s conspiratorial beliefs. He allegedly told agents that while he was in Mexico, he had laid in bed “seeing all the pieces being decoded likeThe Matrix, and that he was Neo.”

The latest affidavit has confused those who knew him.

Coleman’s friend said that his wife and loved ones truly believed the children’s well-being was top priority for Coleman.

source: people.com