Marape returns to the top job after turbulent general elections marred by claims of election fraud, widespread violence, deaths, and major damage to infrastructure across the country.
Marape, whose Pangu Party has won at least 36 of 118 seats, is set to lead a coalition government made up of at least 17 different parties.
So far 105 seats have been confirmed and votes continued to be counted for 13 seats.
