Nigeria, Oct. 29 -- The police in Imo State say they have begun investigation into a viral video showing an officer assaulting a man along the Owerri-Orlu Road in the state.

The police spokesperson in the state, Henry Okoye, said in a statement on Wednesday that the incident happened on Tuesday.

The video clip, which has now gone viral on social media, showed the armed officer assaulting the victim while his fellow officers tried to restrain him.

The officer was subsequently seen attempting to cock his rifle while pointing it at the man.

The man, a motorist, later told the officer's colleagues that the officer stopped him to check his vehicle documents and then demanded "fuel money", which he declined, prompting the officer to descend...