According to the Montgomery County State’s Attorney’s Office, “Today in the Circuit Court for Montgomery County, MD, the Honorable Marielsa Bernard found defendant Sergio Koyangbo, 21, of Bethesda, guilty but Not Criminally Responsible (NCR) for the stabbing death of his stepfather, 46-year-old David Beasley on March 6, 2022. The State challenged an NCR finding by a state expert in December of 2022 and retained one of Maryland’s leading forensic psychiatrists to conduct an independent evaluation of the defendant. That doctor, however, came to the same conclusion of an NCR finding. In light of the second expert’s opinion, the State conceded the issue. Immediately following today’s hearing, Koyangbo was committed to the Maryland Department of Health. He will remain in a medical facility pending future evaluations.
According to Montgomery County Police, on March 6, at approximately 9:30 pm, 2nd District Officers arrived at the scene and located a male victim, later identified as 46-year-old David Beasley from Bethesda, inside the residence with apparent stab wounds to his body. Officers provided life-saving measures to Beasley until Montgomery County Fire Rescue arrived at the scene. Beasley was transported to an area hospital where he succumbed to his injuries. Detectives spoke with witnesses and determined that Koyangbo stabbed his father, Beasley, inside the residence. Detectives also located items of evidentiary value at the residence. Koyangbo was placed under arrest without incident and transported to the Central Processing Unit, where he has been charged with first-degree murder. He is being held without bond.
