An 18-year-old from Wisconsin, accused of the double homicide of his mother and stepfather amid a plot to overthrow the government, is expected to enter a guilty plea.

Nikita Casap faces charges of intentional homicide for the deaths of his mother, 35-year-old Tatiana Casap, and his stepfather, 51-year-old Donald Mayer, who were shot dead in March 2025. Court records reveal that Casap plans to plead guilty to these homicide charges at a hearing on January 8. As per documents obtained by WISN, a local ABC affiliate, the Waukesha County District Attorney, Leslie Boese, intends to dismiss the remaining seven counts, which include charges like theft and concealing a corpse.

According to previous reports by Law&Crime, Casap allegedly committed the murders at the family home in Waukesha around February 11, 2025. He is also accused of stealing the family’s car and fleeing the state before being apprehended in Kansas on February 28, 2025.

The investigation began when police conducted a welfare check after Casap had been absent from school for two weeks. Officers were met with a “smell of decay” upon arrival, as detailed in a criminal complaint reviewed by Law&Crime. They discovered the decomposing bodies of Mayer and Tatiana Casap under blankets, with Tatiana still wearing her winter coat.

During his time on the run, it’s alleged that Casap used Mayer’s phone to impersonate his stepfather, sending text messages to give the impression Mayer was alive. However, the messages raised suspicions among family and friends who described them as “strange” and not typical of Mayer’s communication style.

According to the complaint, video surveillance showed that Nikita Casap stayed at the home with the bodies for several days before he left. The teen reportedly lit candles around the bodies and was picked up on audio saying, “So you can see him there. I can literally see the f—ing rotten body there.” Nikita Casap also took photos of the dead bodies with his own phone.

As authorities investigated the teen’s communications and movements, they uncovered a purported plan to “overthrow the government of the United States and assassinate President Trump.” Among their findings was a manifesto entitled “Accelerate the Collapse,” which outlined “a political revolution in the United States” to “save the white race” from “Jewish controlled” politicians. Nikita Casap was reportedly communicating on Telegram with a Russian national as part of his plot.

Authorities suspected that Nikita Casap killed his mother and stepfather so he could obtain the funds to carry out his plot.

Nikita Casap was charged with two counts each of intentional homicide, hiding a corpse, and misappropriating ID information to obtain money; two theft charges and taking and driving a vehicle without consent; and intimidating a witness. If his plea deal is accepted by Judge Ralph Ramirez, the latter seven charges will be dismissed. Nikita Casap faces a sentence of life without the possibility of extended supervision.