SANTO DOMINGO, Dec 25 (Reuters) - The Dominican Republic has identified its first case of the Omicron variant of COVID-19, the health ministry of the Caribbean country said on Saturday. In a statement on Twitter, the ministry said Omicron had been identified in a person with mild symptoms who had arrived in the country from South Africa. The ministry also said it had later been informed by Chilean authorities that a person who traveled to Chile from the Dominican Republic had tested positive for Omicron. Other potential cases of Omicron are under investigation, the ministry added.