The assailant grabbed the officer's mobile phone battery and fled.
The injured police officer was rescued by members of the public.
A police officer is currently recuperating at Mama Lucy Kibaki Hospital after being attacked by a sword-wielding motorist he had arrested and was escorting to Kasarani Police Station.
According to police records, the corporal was on duty at Mirema junction on Kamiti Road on Sunday, June 2, morning when he spotted a motor vehicle making a U-turn and obstructing other road users.