Congress now has 49 members in the assembly, which now has an effective strength of 53 instead of 60 after three Congress MLAs and four of Naga Peoples Front resigned from the House recently.
Speaking to reporters after handing over his resignation from his residence in Imphal West district, Ngajokpa said he has deep attachment with Congress and its principles as he has been associated with the party for a long time.
The decision though was taken following demands of the electorate of Tadubi constituency which he represents, he said.
Ngajokpa has sent his resignation to Speaker Thokchom Lokeshwar Singh, Assembly secretariat sources said.
The move today follows intense pressure from his workers who urged him to resign from Congress during the MLA Workers Meeting held last week in Senapati district.
Manipur PCC President T N Haokip told media there was no restriction for an MLA to leave the party and the decision of all individuals are always respected by it.
MPCC, he said, will decide its future course of action soon.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)