Liquefied-petroleum gas ceiling prices will rise by 25 cents a litre, to range from $4.69 to $5.08 a litre from July 1.

The Electrical & Mechanical Services Department said the adjustment reflects the movement of LPG international prices in June.

Prices are adjusted according to a specified formula with two elements - the LPG international price of the preceding month and the LPG operating price. The latter is adjusted on the first day of February each year according to the movement in the Composite Consumer Price Index in the previous year.