LONDON (AP) — Protests over high fuel prices in Ireland entered a fourth day on Friday, sparking concerns about fuel shortages and emergency services as demonstrators clogged roads and blocked access to refining and distribution sites around the country.

The Irish government is set to meet with farmers, truckers and agricultural contractors on Friday to discuss the crisis, triggered by rising gasoline and diesel costs as the conflict in the Middle East restricts oil exports from the region. While organizers have said they will call off the coordinated protests if the government agrees to talk with them, it is unclear whether they will be included in the talks.

Protests began on Tuesday as slow-moving convoys restricted access to some of the busiest streets in Dublin, the capital, and blocked fuel depots that supply half the country. Some protesters slept in their vehicles overnight, demanding that the government speak with them.

Over 100 service stations have now run out of fuel and the number could be five times as many by Friday evening if fuel supplies remain disrupted, national broadcaster RTE reported, citing the industry organization Fuels for Ireland.

The government on Thursday asked the army to remove vehicles from blocked roads amid concern that the protests could impede police, firefighters and ambulances responding to emergencies.

The disruption grew out of separate protests around Ireland’s major cities over demands for further cuts to soaring fuel costs.

The government previously approved a range of measures to cut fuel prices, including a temporary reduction in excise taxes on motor fuels, expansion of a rebate for truckers and bus operators that use diesel fuel, and extension of a program that helps low-income people with their heating costs.