A witness who knew Sandvik personally reported concerns about potential bomb materials after seeing a Sept. 1 Facebook post showing cinder blocks with bottles and “Danger” warnings.
Threats escalated over time
A Special Agent with the FBI said in court documents that Sandvik’s online threats became more direct and violent over time. On September 17, he posted multiple messages targeting federal agencies.
“SECRET SERVICE IT IS NO SECRET I AM YOUR BIGGEST THREAT YOU BETTER GET HERE FAST,” one post said, according to court records.
The most serious threat came on October 18 in a post titled “Trump, Can You Feel My Footsteps Coming?” Court documents show Sandvik wrote: “Death is now marching towards the failed and weak Donald Trump” and “DEATH OF TRUMP.”
Website contained violent content
FBI agents traced Sandvik’s personal website through hosting records. The site contained extensive violent content targeting Trump and law enforcement, according to court documents.
One post on the website said Trump would “find yourself without insides as they will be pulled from your body while your limbs are ripped out of their sockets.”
Another post on his Facebook account directed at two West Fargo Police officers claimed that their “INSIDES WILL SOON BE ON YOUR OUTSIDES!”
The website was registered to Sandvik in 2012 under the username “GUNMOVIE,” court records show.
Behavioral analysis cited
FBI agents consulted the bureau’s Behavioral Analysis Unit during the investigation. Agent Thaden said in court documents that Sandvik’s behavior followed a pattern consistent with targeted violence, including grievance, ideation, and planning phases.
The investigation included surveillance of Sandvik’s mother’s property, where agents confirmed vehicles registered to him were present.
U.S. Magistrate Judge Alice Senechal signed the criminal complaint and arrest warrant Wednesday in Fargo.
The case remains under investigation by the FBI and Fargo Police Department.
