The individual believed to be behind the bombing of an IVF clinic, driven by disturbing anti-life ideologies, is now connected to another terrible crime, according to law enforcement authorities.

Guy Bartkus, 25, is believed to have penned a disturbing manifesto where he spoke about the mysterious shooting death of a close female friend.

Over the weekend, a loud blast violently disrupted the peace at the American Reproductive Services fertility clinic located in the upscale area of Palm Springs, around a two-hour drive from Los Angeles.

The bombing blew a massive hole through the building, and left at least one person sitting in a car outside dead, and four others injured.

Authorities believe that Bartkus triggered the explosives while sitting in a Ford Fusion outside, which was left in pieces by the powerful bomb.

According to law enforcement sources, the blast was so powerful that the bomber’s body was ripped to shreds, the Los Angeles Times reported.

On Sunday, officials uncovered a horrifying website with a manifesto that expressed “nihilistic ideations” that they believe was the work of Bartkus.

The suspect had posted online, declaring his intention to start a “war against pro-lifers” by targeting a fertilization clinic and expressed a desire to “rid the planet of the illness known as life.”

The unnamed website also had a 30-minute audio recording labeled “pre” where the speaker further explained why he wished to attack a clinic.

“Basically, it just comes down to I’m angry that I exist and that, you know, nobody got my consent to bring me here,” the speaker said in the recording.

The speaker goes on to describe the death of a friend he calls Sophie, which matches the mysterious fatal shooting of a 27-year-old woman in Washington.

Sophie Tinney died from multiple gunshot wounds on April 20 at a home on Fox Island, outside Seattle, and her boyfriend Lars Nelson, 29, has been accused of second-degree murder.

According to prosecutors, Tinney may have convinced Nelson to shoot her while she slept.

In the manifesto, the writer spoke of Sophie saying, “We had agreed […] if one of us died, the other would probably follow.”

DAD’S CONFESSION

Bartkus’ dad, Richard Bartkus, 75, has shared his shock and heartbreak after hearing about his son’s death and the apparent violence.

The distraught dad said that he hadn’t seen his son in 11 years, and that they were separated when Bartkus was younger after he divorced his mom.

When Bartkus was just nine years old, Richard started to notice disturbing signs of violence as his son burnt down their home while playing with matches, he told KTLA.

He said the little boy had an affinity for fire, but despite his attempts to crack down on him playing with matches, a young Bartkus managed to light a shed by the home ablaze, ending in the house burning to the ground.

“After he had burned the house down, he started changing a little bit, he’d light fires,” Richard said.

“I was too strict for him, so he wanted to stay with mom until the divorce came through. Mom was lenient.”

Richard described Barkus as a “smart, good kid” who was “a followers who was easily influenced by others.”

He said his son used to make model rockets and smoke bombs as a child.

Despite the now-horrifying signs, Richard said he couldn’t ever imagine his son committing such a heartless attack.

“We hadn’t talked in over 11 years, and now I won’t see him again,” Richard said, breaking down in tears.