Prices of fuels and key supplies in Yemen have soared in May amid ongoing violence and a blockade on the country's ports.
The blockade was part of the Saudi-led Arab military operation against the Houthi militants launched on March 26. It has affected all imports leaving the people to face the worst lacks of supplies.
The Studies and Economic Media Center (SEMC) said in a report on Saturday the price of petrol rose by 700% and the price of diesel by around 450% as lacks of fuels persist.
Owing to ongoing conflict deepening the power vacuum, the black market has flourished and the result are product monopoly and price manipulation, it said.
In surveyed conflict cities including Taiz, the prices of other key supplies especially foodstuffs have increased by around 60% and that is not the real problem now but the ongoing lacks of all supplies, it said.
The report said the country has almost run out of cooking gas and that aid allowed into Yemen during a recent ceasefire was actually insufficient.
The price of a gas cylinder hit all-time record increasing by 300%, it said amid calls for a new ceasefire in order to help more than half the population who have been affected by recent violence.
Lately, the ICRC said violence in Yemen continues despite peace and humanitarian efforts while warning that civilians bear the brunt.
Earlier, Oxfam said the recent escalation has left two thirds of the Yemeni population, 16 million, without clean water.
Moreover, the WHO has been warning of an imminent collapse of the healthcare system because of lacks of life-saving medicines, fuels and power.
Many hospitals have shut down and those keeping operations have been overwhelmed by the influx of patients and can't receive more people.