Crime & Safety
Deaths Of Arlington Woman, Man In December Ruled Murder-Suicide
A married couple found deceased inside their East Falls Church residence in December had died of intentional carbon monoxide poisoning.
ARLINGTON, VA — The Office of the Chief Medical Examiner has determined that the cause and manner of the death of an East Falls Church married couple to be a murder-suicide.
Arlington County Police responded around 5:18 p.m., on Dec. 7, 2023 to a residence in the 2400 block of N. Powhatan Street for a welfare check. Police located a deceased man and woman, who showed signs of intentional carbon monoxide poisoning.
The deceased were identified as Maria Theista Macknight and Gregory Cunningham, both 72, of Arlington.
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In March, the medical examiner determined that Macknight’s death was a homicide caused by carbon monoxide poisoning. Cunningham’s death was ruled a suicide with cause being carbon monoxide poisoning.
Anyone with information about this case is asked to contact ACPD's Homicide/Robbery Unit at 703-228-4180 or ACPDTipline@arlingtonva.us. Information may also be reported anonymously through the Arlington County Crime Solvers hotline at 1-866-411-TIPS (8477).
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