Mukilteo police say 19-year-old Allen Christopher Ivanov told detectives he broke up with his girlfriend two months ago, but then decided he wanted her back — and the former couple began spending time together last week, around the same time Ivanov bought a semi-automatic rifle, according to a court document released Monday.
But Ivanov became jealous and angry when Anna Bui began hanging out with other young men and posting photos on social media, says the affidavit of probable cause outlining the police case against him.
Ivanov is accused of gunning down teenage partygoers early Saturday morning at a house party in Mukilteo.
Killed were Bui, Jake Long and Jordan Ebner. All were 19 and all were 2015 graduates of Mukilteo High School, along with Ivanov.
A fourth teen, 18-year-old Will Kramer, was wounded.
Ivanov also shot at the party host, a teen whose parents were away, but the intended target managed to run to safety at a neighbor’s house across the street, the affidavit says.
Ivanov was arrested by a Washington State Patrol trooper about 90 minutes after the shooting near Chehalis, nearly 100 miles away, with his rifle on the front seat of his Subaru, the affidavit said.
On Sunday, a court commissioner in Everett found probable cause to hold Ivanov on investigation of aggravated first-degree murder domestic violence in connection with Bui’s death, two counts of first-degree murder for the deaths of Long and Ebner, and attempted first-degree murder for wounding Kramer.
He is to make his first court appearance Monday afternoon in Everett, where a judge is expected to set bail.
After his arrest and return to Everett, “Ivanov stated that everything that went on tonight was about a girl,” police wrote in the affidavit.
Ivanov became jealous after seeing photos of Bui on Snapchat with other guys — evidence “she was getting on with her life without him,” the document says. He realized she was his “dream girl,” he had made a mistake breaking up with her “and wanted to get back together,” the affidavit says.
They had started spending time together and he thought things were going well “and there was potential that they were going to get back together,” says the affidavit. But then he heard from others that Bui “was seeing other guys while the two of them were talking and that made him angry.”
The affidavit says Ivanov purchased a Ruger AR-15 semi-automatic rifle about a week ago, intent on using it for target practice. He signed up for a firearms safety class, which was to begin early this month.
He told police he viewed “the rifle as a symbol of power,” according to the affidavit.
On Friday night, Ivanov left work early because he “wasn’t feeling well,” then went to the Cabela’s store in Marysville to buy a second magazine for the rifle because he had been told he would need it for the firearms class, the affidavit says.
Ivanov arrived at the party at 10009 64th Place West at 10 p.m. Friday but parked across the street and watched the house, the affidavit says. He crept up toward the house, looked inside and saw Bui “with another male and got angry,” it says.
Ivanov then returned to his car, where he read the owner’s manual for the rifle, loaded the magazine and inserted it into the AR-15, the affidavit says.
Around midnight, he crept to the back of the house, hiding “along the west wall near the living room windows,” it says. He was discovered by a male partygoer, who said, “No, no, no,” before Ivanov opened fire, shooting the male, according to the affidavit.
Ivanov told police “it was too late to turn back, and once he had pulled the trigger, his adrenaline kicked in,” says the affidavit. He entered the house through a side door, found Bui and shot her twice, it says. He continued through the house, then shot another male “running toward the house,” police wrote.
Ivanov went upstairs and onto the balcony off the master bedroom “and fired down at two more males in the driveway,” it says. “He then went up on the roof and realized his magazine was empty,” so returned to his car and drove away.
Bui was found in the dining area near the back of the house, the affidavit says. Two shell casings were found near her head, with two more found on a nearby table, it says.
Police found one of the male victims lying in the doorway, while the other male victim was found lying facedown on the path to the west of the front door, says the affidavit. It does not indicate which of the male victims was Long and which was Ebner.
As part of the investigation into the killings, a detective spoke by phone with a person described as a “witness from Kentucky,” who said that two or three days earlier, Ivanov had sent him text messages “regarding committing a mass shooting,” the affidavit says. Detectives also viewed Ivanov’s social-media posts, which suggest he “was considering the murders … he later committed,” the affidavit says.
Vicki Bratvold, whose son hosted the house party where the shootings occurred, texted a Seattle Times reporter on Monday, writing “there are no words to express our sorrow.”
“We have always tried to make our house a loving, safe, happy place that the kids could always come. Our hearts are broken for the parents of Jake, Anna, and Jordan. We are praying for Will’s recovery,” she wrote.