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Police were called at 1.19pm this afternoon after reports of a man walking around Meopham with a knife.
Officers searched the area and called in the police helicopter to help patrols conduct a search for him.
The man, believed to be in his 50s, was later located in Camer Park at about 3pm by a sniffer dog, hiding up a tree.
It is understood he had mental health issues.
He was taken by ambulance to Darent Valley Hospital.