A Waukesha teen who pleaded guilty to killing his mother and stepfather was sentenced Thursday afternoon to life in prison without the possibility of parole.Nikita Casap, who was 17 at the time of the killings, pleaded guilty la st month to two counts of first-degree murder in the deaths of his mother, Tatiana Casap, and his stepfather, Donald Mayer. The court dropped seven other counts against him, which included stealing money, taking the family car, and fleeing. Casap cried as he addressed the judge, saying he loved his parents and felt supported by them."What I did was vile. What I did was thoughtless," Casap said."My mom and stepdad were always supportive of me. I remember when I was in middle school, they were always at my track meets," Casap said. Casap admitted he shot and killed his mother, Tatania Casap, and his stepfather, Donald Mayer, in February of last year. The then-17-year-old lived with their bodies for nearly two weeks before stealing their car and $14,000 and going on the run.According to federal court documents, Casap was motivated to kill his family through a plot to assassinate President Trump and overthrow the government. The district attorney says this was all Casap's plan, and he went online to find people to help him carry it out. But the defense says Casap was a lonely, isolated kid who was manipulated by an online predator.Watch: Teen who admitted to killing his Waukesha parents sentenced to life in prison without possibility of parole Teen who admitted to killing his Waukesha parents sentenced to life in prison without possibility of parole"These extremists target children and other vulnerable victims online. This is a serious and growing national security threat to the United States. It is of very significant interest to federal law enforcement in general," defense attorney Paul Rifelj said.Previous coverage: Disturbing details after prosecutors charge Waukesha teen in deaths of mom, stepfather: Disturbing details after prosecutors charge Waukesha teen in deaths of mom, stepfatherWaukesha County Circuit Court Judge Ralph Ramirez said Casap was deceived into believing he was part of something larger. "He thought he was part of a big plan that was going to make a big impact for him and others, and he was scammed," Ramirez said.Waukesha County District Attorney Lesli Boese said she is also concerned that while on the run, Casap made several disturbing searches, including looking up serial killers and school and mass shootings around the country. Boese said she is worried about what else Casap could be capable of if released into the community."There is no circumstance that this victim should be out in community," Boese said.The judge agreed, sentencing Casap to life without the possibility of parole.Casap has never been charged with any federal crimes in connection with his alleged plan to assassinate the President.This story was reported on-air by a journalist and has been converted to this platform with the assistance of AI. Our editorial team verifies all reporting on all platforms for fairness and accuracy.Its about time to watch on your time. Stream local news and weather 24/7 by searching for TMJ4 on your device.Available for download on Roku, Apple TV, Amazon Fire TV, and more.Report a typo or error // Submit a news tip ...read more read less