The competition is being held at the PNG Power Dome (Sir John Guise Indoor Complex).
In opening session, the weight divisions of 47kg (women), 52kg (women), 57kg (women) and 59kg (men) lifted the bar to find the champions.
In the women's 47kg, it was a guarantee first, second, finish for PNG as only two competitors were on the card.
Hitolo Kevau grabbed gold and team mate Navili Benson settled for silver.
Kevau lifted a combined squat, bench press and dead lift total of 240kg, and Benson managed 234kg.