In 1827–1828 Ngāti Toa, under the leadership of Te Rauparaha and armed with muskets, successfully attacked Kāti Kurī at Kaikōura, who were already expecting the Tū-te-pākihi-rangi of Ngāti Kahungunu as friendly visitors. He named the battle ("Shark's Tooth") after a threat from Rerewaka, a local chief. Ngāti Toa then visited Kaiapoi, ostensibly to trade. When Ngāti Toa attacked their hosts, the well-prepared Ngāi Tahu killed all the leading Ngāti Toa chiefs except Te Rauparaha who subsequently returned to his stronghold at Kapiti Island. During this time Ngati Tumatakokiri continued attacking the Poutini Ngāi Tahu from Kawatiri over land and hunting disputes, with Ngāti Rārua also attacking the Poutini Ngāi Tahu with muskets, seeking pounamu.