A drunk police officer shot dead two of his colleagues in the Ethiopian capital Addis Ababa as reported by state-affiliated Fana Broadcasting Corporation.
The policeman, who fired on his colleagues was also shot dead, Federal Police Commissioner Zeynu Jemal was quoted by Fana as saying.
According to reports, the attacker was intoxicated with alcohol at the time, Zeynu said.
Zaynu made no mention of any possible ethnic motivation behind the shooting, which comes after an escalation of ethnically-charged violence in Ethiopia.
According to the media report, roads in the central district of Bole where the shootout occurred were blocked off, however, by 06:30 GMT, calm appeared to have returned to the area.