A police inspector in the Federal Capital Territory (FCT) on Saturday killed his colleague, a corporal, before taking his own life.
FCT Police Command in a statement on Sunday by Mariam Yusuf condemned the killing.
The statement said the incident happened at the Police Divisional Headquarters in Dutse Alhaji area of the territory.
Yusuf said that preliminary investigation into the incident revealed that the inspector fired a shot at the corporal and injured a Deputy Superintendent of Police before taking his own life.
She added that the Commissioner of Police in Charge of FCT, Bala Ciroma, had ordered a discreet investigation into the incident and put measures in place to forestall future reoccurrence.
Yusuf said the command commiserates with the family of the deceased and urged residents to remain calm.
She also pledged the commitment of the command to provide adequate security during the Yuletide.