Nairobi, Kenya (CNN) -- Islamic militants have moved fighters to the Somali border town of Afmado in an effort to combat Kenyan forces who have entered Somalia, the militant group Al-Shabaab said Tuesday. The group said it viewed the Kenyan forces crossing of the joint border as "an affront to Somalia's territorial sovereignty." This move of fighters, which started Monday, comes after the militant group had threatened to "come into Kenya" if Kenyan forces did not leave Somalia. "Kenyan troops have entered 100 kilometers into Somalia, and their planes are bombarding and killing residents," Sheikh Ali Mahmud Ragi, spokesman for Al-Shabaab, said in an online message posted on a jihadist website this week. "We shall come into Kenya if you do not go back."
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NEW: Kenyan and Somali governments pledging cooperation in Al-Shabaab fight
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NEW: Al-Shabaab, which is linked to al Qaeda, denies role in recent abductions
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The move of Kenyan troops comes after threats from Al-Shabaab to enter Kenya
Many analysts believe the military push has severely affected @placeholder, along with targeted strikes against organization members and the weakening of al Qaeda.