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Arrest made in Londonderry homicide

By Christopher Roberson - Staff Writer | Jan 22, 2026

Mark Delisle, 32, of Manchester, was arrested on Jan. 21 in connection with the murder of Yan Leek, 35, of Londonderry. Courtesy photo/Manchester Police Department

CONCORD – Mark Delisle, 32, of Manchester, was taken into custody on Jan. 21 in connection with the murder of Yan Leek, 35, of Londonderry.

According to the state Attorney General’s Office, on Jan. 20, officers responded to the area of Barry Avenue and Spruce Street and found Leek to be unresponsive.

The autopsy results determined that Leek died after being stabbed in the chest.

Delisle has been charged with one count of second degree murder and was scheduled to be arraigned in Manchester District Court on Jan. 22.

Under state law, if convicted, Delisle could face up to life in prison.