A man accused of killing an eastern Missouri deputy in 2012 has been declared mentally incompetent to stand trial. The St. Louis Post-Dispatch reported Tuesday that Washington County Associate Circuit Judge Troy Hyde issued the ruling, which leaves 34-year-old Gary Sancegrow confined at the Fulton State Hospital. The ruling also orders dismissal of first-degree murder and armed criminal action charges. Washington County Deputy Christopher Parsons was fatally shot on Dec. 15, 2012. Sancegrow turned himself in after a 16-hour manhunt. Court records say Sancegrow has been diagnosed with schizophrenia and takes anti-psychotic medication.