“Kenyan troops have entered 100 kilometers into Somalia and their planes bombarded many places and killed residents,” Al Shabaab spokesman Sheikh Ali Mohamud Rage told reporters in a town south of Mogadishu. “We shall come into Kenya if you do not go back.”

Kenyan and Somali forces launched an operation to pursue the Al-Qaeda-linked militants in southern Somalia on Sunday to drive the militants, who are linked to a wave of kidnappings, away from Kenya’s border.