"The bomb, which was hid in an ice thermos, went off at a market in the town … which was placed by al-Shabaab fighters," police officer Ali Muumin told China's Xinhua News Agency.
Radio Garowe reported al-Shabaab, an offshoot of al-Qaida, intended to kill Somali government troops stationed in Baidoa.
"There was a huge explosion next to the meat market and vegetable market where many women were shopping for groceries, the majority killed in the blast were women," Radio Garowe quoted a female shopkeeper who was a few blocks away as saying.
The injured were taken to a nearby hospital under the control of Somali government forces and Ethiopian troops, Xinhua said.
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