NEW : Kenyan and Somali governments announced cooperation in Al - Shabaab fight . Kenya : Al - Shabaab , which is linked to Al Qaeda , has role in recent events . The move of Kenyan troops comes after threats from Al - Shabaab to enter Kenya .
NEW : Kenyan and Somali governments pledging cooperation in Al-Shabaab fight . NEW : Al-Shabaab , which is linked to al Qaeda , denies role in recent abductions . The move of Kenyan troops comes after threats from Al-Shabaab to enter Kenya .