The Zimbabwe Energy Regulatory Authority said a litre of petrol would now cost 7.45 Zimbabwe dollars, up 22% from 6.10 dollars. Diesel now costs 7.19 a litre, a 23% rise.

With inflation soaring, economic analysts say increases in fuel prices are adding to price pressures, especially as rolling electricity cuts are forcing businesses to use expensive diesel generators to power their operations.

Diesel and petrol prices have gone up by 456% this year, in line with a slide in the value of the local RTGS currency, renamed the Zimbabwe dollar last month.

The biggest fuel price hike in January, a 150% increase, triggered violent protests by Zimbabweans. More than a dozen people were killed when the army clamped down on the unrest.

On July 13, fuel prices were hiked by up to 16% after finance minister Mthuli Ncube said fuel was considerably cheaper than in neighbouring countries. Ncube has said he would like to see the price increase to the equivalent of $1 a litre.

The Zimbabwe dollar was trading on Monday at 8.88 against the greenback on the official interbank market, little changed from last week. On the black market, $1 fetched 10.5 Zimbabwe dollars.