The International Red Cross said a third of the country’s 9 million people may need emergency aid. Red Cross volunteers on the ground have been providing first aid to victims but ran out of supplies Wednesday night.

“The limited medical supplies that the Red Cross had in Haiti before the earthquake have now been distributed and exhausted,” American Red Cross spokesman Eric Porterfield told ABC News. Thirty relief workers left Santo Domingo at 4 a.m. local time today to travel to Haiti with additional medical supplies.

Haitian Red Cross spokesman Pericles Jean-Baptiste told Reuters that “There are too many people who need help,” and former president Bill Clinton said that some places don’t even have aspirin.