Ethiopia ‘kills 123’ ONLF rebels and surrounds 90 more
Somaliland – which has declared independence from the rest of Somalia but has not been internationally recognised – has previously helped the Ethiopian government in its fight against the ONLF (Ogaden National Liberation Front).
Mr Abdi says his forces encircled the ONLF rebels in the remote Maar Maar mountains, which form the porous border region between Somaliland, Ethiopia and Djibouti.
A senior ONLF commander, known as Hassan Bossaso, was captured, Mr Abdi told the BBC.
Ethiopia blames its regional arch-enemy, Eritrea, for supporting the ONLF – an accusation Eritrea denies.
The ONLF wants self-determination for residents of Ethiopia’s Somali region, which is also known as Ogaden.
In recent months, the Ethiopian government has signed peace agreements with various ONLF factions, says the BBC World Service’s Africa editor, Martin Plaut.
However, Ethiopia has not ended its conflict with the group led by the former head of the Somali navy, Admiral Mohamed Omar Osman.
This is the group reported to have mounted the latest attack, although our editor says it has now been all but eliminated as a rebel force.