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 .
NEW : `` Such is the law of retribution , '' Al-Shabaab statement says . Red Cross reports two grenade attacks -- one in Mombasa , one in nearby Mtwapa . Kenya has been on edge since it sent its troops into Somalia to pursue Al-Shabaab militants . The attacks occur in communities along the Indian Ocean .