President Felix Tshisekedi received a resignation letter from the prime minister eight days after the ratification of Lukonde's mandate as a national deputy. He will now become a member of the assembly of parliament.
"The resignation has been accepted. However, the president has asked [Lukonde's] government to continue handling current affairs," until a new government is formed, the presidency reportedly said in another statement later on Tuesday.
The reasons for Lukonde's resignation were not specified, though.
Last month, the results of the legislative elections in the African country were announced, according to which the ruling Union for Democracy and Social Progress party got the majority of seats in the 500-member DR Congo National Assembly.
This was followed by the Union for the Congolese Nation party, led by Economy Minister Vital Kamerhe, a supporter of Tshisekedi.
Moise Katumbi's party, Together for the Republic, became the main opposition force by winning 22 seats.