American humanitarian aid to Syria broke $100 million on Wednesday, a day after the UN announced that over 100,000 refugees had fled the country in August, the US State Department announced.

The US Agency for International Development announced on Wednesday the provision of an additional $21 million to World Food Program (WFP) projects in Syria and neighboring countries.

Nearly half of the US’s humanitarian aid to Syria is dedicated to WFP food assistance. Of the newly contributed funds,  “$14.3 million will provide food assistance to conflict-affected people inside Syria and $6.7 million to support Syrians displaced to neighboring countries,” according to the State Department.

On Tuesday, the UN’s refugee agency announced that the number of registered Syrian refugees had nearly doubled in August — which opposition sources reported was the civil war’s bloodiest month — rising by 103,416 to 235,300. An estimated 5,000 Syrians were killed over that month.

At least 183,000 Syrians have fled to Jordan since the uprising against President Bashar Assad began last year. UNHCR reported that an average of 1,000 Syrians were fleeing into Jordan to seek asylum each day.

As many as 2.5 million people in Syria are in need of humanitarian assistance, and approximately 1.2 million are internally displaced, according to the UN Office for the Coordination of Humanitarian Affairs.

Opposition sources raised their death tolls for the 19-month civil war to between 23,000 and 26,000. On Tuesday alone, 100 Syrians were killed across the country, according to the Syrian Observatory for Human Rights. The Local Coordination Committees of Syria placed that figure at 173 dead.