Reports say the policeman was angry at the attitude of the commercial tricycle drivers operating in the area.
The victims were a commercial tricycle rider, a passerby and a trader who are said to be receiving treatment at the University of Port Harcourt Teaching Hospital.
The leadership Rumuokuta, Ada George branch, Tricycle Owners Association of Nigeria said it would liaise with the affected persons to get justice for them.
The spokesman for the state Police Command, Nnamdi Omoni has in the meantime confirmed the incident and disclosed that two police officers linked with the shooting had been detained at the State Criminal Investigation and Intelligence Department as the commissioner of Police has ordered an investigation into the matter.
