source: Undisclosed Source
actor1: Al Shabaab
actor2: Military Forces of Somalia (2017-)
location: Bulo Mareer
notes: On 20 December 2021, Al Shabaab militants attacked AMISOM UPDF and government security forces (SNA) at a defensive bases in Bulo Mareer village (Marka, Lower Shabelle). There were no casualties. Al Shabaab claimed responsibility.