DENVER (AP) — A teenager suspected in a shooting attack at a suburban Denver high school that left two students in critical condition appeared fascinated with previous mass shootings including Columbine and expressed neo-Nazi views online, according to experts.
Since December, Desmond Holly, 16, had been active on an online forum where users watch videos of killings and violence, mixed in with content on white supremacism and antisemitism, the Anti-Defamation League’s Center on Extremism said in a report.
Holly shot himself following Wednesday’s shooting at Evergreen High School in Jefferson County. He died of his injuries. It is still unclear how he selected his victims. The county was also the scene of the 1999 Columbine High School massacre that killed 14 people.
Holly's TikTok accounts contained white supremacist symbols, the ADL said, and the name of his most recent account included a reference to a popular white supremacist slogan. The account was unavailable Friday. TikTok said accounts associated with Holly had been banned.
Holly’s family could not be reached. The Associated Press left a message at a telephone number associated with the house that police searched after the shooting.
A spokesperson for the Jefferson County Sheriff's Office, Mark Techmeyer, declined to comment on the ADL's findings or discuss its investigation into the shooting. The office previously said Holly was radicalized by an unspecified “extremist network" but released no details.
Two recent suspects in school shootings were active on the so-called “gore forum” that Holly used called Watch People Die, according to the ADL. Holly appears to have opened his account in the month in between shootings in Madison, Wisconsin, and Nashville, Tennessee, the ADL said.
A few days before Wednesday's shooting, Holly posted a TikTok video posing in a similar way to how the Wisconsin shooter posed before killing two people during in December. He included a photo of the Wisconsin shooter in a post in which Holly wore black T-shirt with “WRATH” written on the front.
He also posted videos showing how he made the shirt that was like the one worn by a gunman in the Columbine shooting, the ADL said.
“There is a through-line between those attacks,” said Oren Segal, the ADL’s senior vice president of counter-extremism and intelligence. ”They’re telling us there is a through line because they are referencing each other."
Watch People Die administrators said in an email that Holly lied about his age in order to access the site and was a not a very active user of it, with only seven comments. The email said the site is “adamantly pro-Israel” but does not silence opposing viewpoints. It referred to Holly and the shooters in Wisconsin and Tennessee as “unhinged losers.”
Holly was also active on TikTok’s “True Crime Community,” where it says users have a fascination with mass murderers and serial killers, the ADL said.
Some TikTok posts shared by the ADL show one user encouraging Holly to be a “hero,” a term it says white supremacists use to refer to successfully ideologically motivated attackers.
The person also told Holly to get a patch with a Nazi-era symbol that was worn by the men who carried out the 2019 attack on a mosque in Christchurch, New Zealand, and the 2022 attack on a supermarket in Buffalo, New York.
Holly posted a photo of two patches that he had but said the Velcro on the back had fallen off.
“I'm gonna use stronger glue when I fix it,” he said.
Brown reported from Billings, Montana.
Flowers are left in remembrance of those wounded in a shooting at Evergreen High School in Evergreen, Colo., Thursday, Sept. 11, 2025. (AP Photo/Colleen Slevin)
COLUMBUS, Ohio (AP) — Police in Ohio's capital city said Wednesday that they have gathered enough evidence to link a man charged in the double homicide of his ex-wife and her husband in their Columbus home last month to the killings.
Columbus Police Chief Elaine Bryant said in an Associated Press interview that authorities now believe Michael David McKee, 39, a vascular surgeon who was living in Chicago, was the person seen walking down a dark alley near Monique and Spencer Tepe's home in video footage from the night of the murders. His vehicle has also been identified traveling near the house, and a firearm found in his Illinois residence also traced to evidence at the scene, she said.
An attorney representing McKee could not be identified through court listings.
His arrest Saturday capped off nearly two weeks of speculation surrounding the mysterious killings that attracted national attention. No obvious signs of forced entry were found at the Tepes’ home. Police also said no weapon was found there, and murder-suicide was not suspected. Further, nothing was stolen, and the couple’s two young children and their dog were left unharmed in the home.
“What we can tell you is that we have evidence linking the vehicle that he was driving to the crime scene. We also have evidence of him coming and going in that particular vehicle,” Bryant told the AP. “What I can also share with you is that there were multiple firearms taken from the property of McKee, and one of those firearms did match preliminarily from a NIBIN (ballistic) hit back to this actual homicide.”
Bryant said that the department wants the public to keep the tips coming. Investigators were able to follow up on every phone call, email and private tip shared from the community to the department and some of that information allowed them to gather enough evidence to make an arrest, she said.
That work culminated in the apprehension of McKee in Rockford, Illinois, where the hospital where he worked — OSF Saint Anthony Medical Center — has said it is cooperating with the investigation. He has been charged with premeditated aggravated murder in the shooting deaths. Monique Tepe, who divorced McKee in 2017, was 39. Her husband, a dentist whose absence from work that morning prompted the first call to police, was 37.
McKee waived his right to an extradition hearing on Monday during an appearance in the 17th Judicial Circuit Court in Winnebago County, Illinois, where he remains in jail. Bryant said officials are working out details of his return to Ohio, with no exact arrival date set. His next hearing in Winnebago County is scheduled for Jan. 23.
Columbus Mayor Andrew Ginther said Wednesday that the city doesn't prioritize high-profile cases any more than others, noting that the city's closure rate on criminal cases exceeds the national average. The city also celebrated in 2025 its lowest level of homicides and violent crime since 2007, Ginther said.
“Every case matters. Ones that receive national attention, and those that don’t,” he told the AP. “Every family deserves closure and for folks to be held accountable, and the rest of the community deserves to be safe when dangerous people are taken off the street.”
Ginther said it is vital for central Ohioans to continue to grieve with the Tepes' family, which includes two young children, and loved ones, as they cope with “such an unimaginable loss.”
“I want our community to wrap our arms around this family and these children for years to come,” he said.
This undated booking photo provided by the Winnebago County Sheriff's Office Tuesday, Jan. 13, 2026, shows Michael David McKee, who was charged in the killing of his ex-wife, Monique Tepe, and her husband Spencer Tepe at their Columbus, Ohio, home on Dec. 30, 2025. (Winnebago County Sheriff's Office via AP)
Spencer and Monique Tepe's home in Columbus, Ohio, on Tuesday, Jan. 6, 2026. (AP Photo/Patrick Aftoora-Orsagos)
This image taken from video shows Michael David McKee walking into the courtroom on Monday, Jan. 12, 2026, in Rockford, Ill. (WIFR News/Pool Photo via AP)
