Policeman's man chopped off while struggling to stop a commercial bus driver

These pics have gone viral on Twitter but no one is saying exactly what part of Nigeria it happened and when it happened. According to the story, the police man pictured above got his left hand cut off
while struggling for control of the steering wheel of a commercial bus with its driver during an attempted arrest. Continue to see graphic photo of the Police man's severed hand
Also heard he tried to force the driver to pull over but the driver didn't answer ... This money issue tho !! 100 naira