The Diocese of Kohima-Imphal which included the two states of Nagaland and Manipur was erected by Pope Paul VI on January 21, 1973 with Rt.Rev.Abraham Alangimattathil SDB as its first bishop. Bifurcating this diocese, the Diocese of Imphal was erected on April 21, 1980 with Rt. Rev.Joseph Mittathany as its first bishop who was transferred from the Diocese of Tezpur. On January 18, 2002, Pope John Paul appointed Rev. Fr. Dominic Lumon Coadjutor Archbishop Elect and he was ordained as such by Most Rev. Joseph Mittathany on April 7, 2002. Accepting his resignation after completion of 75 years of age, and by virtue of ‘Coadjutorship’ Most Rev. Dominic Lumon took over as the Archbishop of Imphal on July 12, 2006.