An Ethiopian military helicopter crashed on Thursday, killing 18 people, the state-affiliated Fana Broadcasting Corporate reported.
The aircraft crashed on a flight between the eastern city of Dire Dawa and the Ethiopian air force headquarters in Bishoftu, a resort town southeast of the capital Addis Ababa, the agency said.
Everyone on board -- 15 soldiers and three civilians -- was killed.
"The cause of the crash is being investigated. I express deep sorrow for those who lost their lives," Addisu Arega, a top official in Oromia region where the crash occured, wrote on Facebook.
In 2013, an Ethiopian military cargo plane crashed in Mogadishu, killing four crew members.