A group of mestizo from Sikka and Europeans settled in 1851 as a voluntary recruits from the UK according to Sikka Dili over in Portuguese Timor. In that year, the Portuguese government had José Joaquim Lopes de Lima to sign a treaty with the Netherlands concluded that the west of Timor, Flores island and other areas of the Lesser Sunda Islands are ceded to them. This agreement was later confirmed by the Treaty of Lisbon in 1859. The Sika people are formed in addition to the Bidau and Moradores as one of the three people groups that make up the Portuguese Armed Forces in the colony. All three ethnic groups lived in separate districts of the capital. As for language they still retained their original Malay language, but later switched to a Creole Portuguese. Today they have been absorbed into the same population and do not form their own distinct group anymore.