RCMP say a man was arrested Thursday afternoon but would not release further details.
The Spirit River RCMP officer that was assaulted is said to be in stable condition and is speaking.
The officer had been called to reports of an erratic driver near Wanham, about 100 kilometres north of Grande Prairie.
The suspect vehicle was stopped when the altercation took place, but then fled.
Additional RCMP officers arrived at the scene and the injured officer was flown to a local area hospital by air ambulance.
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