CONCORD, NH – An arrest has been made in connection with the January 20, 2026, suspicious death of an adult male in the area of Barry Avenue and Spruce Street in Manchester.
Mark Delisle, 32, has been charged with one count of second-degree murder for knowingly stabbing Yan Leek, 35, of Londonderry. It is anticipated that Mr. Delisle will be arraigned at the 9th Circuit Court in Manchester on Thursday.
An autopsy was conducted by the Office of the Chief Medical Examiner on Mr. Leek. The Office determined that the cause of Mr. Leek’s death was a stab wound to the chest, and the manner of death was homicide.
The investigation into Mr. Leek’s death is ongoing. Investigators are continuing to look into the sequence of events leading up to the stabbing and continue to ask any residents or citizens who may have information and have not already spoken with investigators to please contact the Manchester Police Department at (603-792-5518) (Detective Guillaume Joffres) or (603-792-5555) (Detective Harrison Elwell).
The exact circumstances surrounding the incident remain under active investigation. Additional information will be released as it becomes available while protecting the integrity of the investigation. The charges and allegations against Mark Delisle are merely accusations, and he is presumed innocent unless and until proven guilty.