Mascud Abdulahi Adan, a reporter for Dalsan radio, was seriously wounded by a bullet in the back, while Mohamed Farah Sahal, working for Goobjoog radio, was hit in the shoulder, according the National Union of Somali Journalists (NUSOJ).
The attack took place yesterday in the volatile southern port of Kismayo, where rival warlords have clashed in recent weeks for control of the city.
"We condemn the attack on the journalists in the strongest terms possible and call for an urgent investigation to bring the attacker to book," said Mohamed Ibrahim, NUSOJ secretary-general.
"Mascud was trying to report the attack (on AU troops)... and was on his way to the scene when they were shot at," Dalsan radio director Hassan Ali Gesey said.
It was not clear if the journalists were directly targeted.
Several rival factions are battling for control of Kismayo, a strategic and economic hub in the southern Jubaland region.
The union blamed a fighter from the Ras Kamboni militia of the self-declared "president" of Jubaland, Ahmed Madobe, a former Islamist chief now allied to Kenya.
Some were simply caught up in frontline fighting or bomb attacks, while others are seen as targeted killings by Al-Qaeda-linked Shebab insurgents, or others trying to settle scores within the multiple factions in power.
