The militants said on the group's Twitter account that Denis Allex was executed at 7:30 a.m. Thursday in Bulo Marer, Shabelle Media Network reported Thursday.
Al-Shabaab had sentenced Allex to death after a failed attempt Saturday to free him by French commandos, Radio France Internationale reported.
French officials said after the raid that Allex was mostly likely killed during the raid. However, an al-Shabaab spokesman said the agent was still alive.
Megyn Kelly: Santa Claus and Jesus are both white men
Wisconsin business offering 'therapeutic cuddling' forced to close