Somalia : ` ` Such is the law of retribution , '' Al - Shabaab statement says . Red Cross reports two reported attacks -- one in Nairobi , one in nearby Mtwapa . A second grenade hurled into a stadium in the coastal city of Mombasa injured two others , she said . Kenya has been on alert since it sent its troops into Somalia to pursue Al - Shabaab militants . The attacks occur in areas along the Indian Ocean .
Somalia : ` ` Such is the law of retribution , '' Al - Shabaab statement says . Red Cross reports two reported attacks -- one in Nairobi , one in nearby Mtwapa . Kenya has been on alert since it sent its troops into Somalia to pursue Al - Shabaab militants . The attacks occur in areas along the Indian Ocean .