Nigeria, Jan. 20 -- A police inspector has shot dead his colleague in Rivers State, South-south Nigeria.

The inspector, Victor Okus, shot dead the victim, Ibrahim Sani, and injured another officer, Daniel Dauda, on Sunday in Port Harcourt, the state capital.

The police spokesperson in Rivers State, Grace Iringe-Koko, confirmed the incident in a statement on Monday.

Mrs Iringe-Koko, a chief superintendent of police, said the incident occurred at Next Cash and Carry Supermarket in Port Harcourt, where the police officers were on joint guard duty with military officers.

The police spokesperson said the Unit Commander, 14 PMF, Turaki Hassan, who was in charge of the area where the incident occurred, reported that it happened at about 1p.m...