On 12–13 November 1989, a group of Hawiye officers and men belonging to the 4th Division at Galkayo, in Mudug, mutinied. General Barre's son, Maslah, lead a force of Marehan clansmen to suppress the mutiny. Punishment was meted out to local Hawiye villages. In mid-November 1989, rebel forces briefly captured Galkayo. They reportedly seized significant quantities of military equipment at the 4th Division Headquarters, including tanks, 30 mobile anti-aircraft guns and rocket launchers. However, the rebels were unable to take most of this equipment so they incinerated it. Government forces thereafter launched massive reprisals against civilians residing in the regions corresponding with the 21st, 54th, 60th and 77th military sectors. The impacted towns and villages included Gowlalo, Dagaari, Sadle-Higlo, Bandiir Adley, Galinsor, Wargalo, Do'ol, Halimo, Go'ondalay and Galkayo.