Prime Minister Shinzo Abe on Tuesday pledged $100 million in fresh aid during a U.S.-led refugee summit in New York.

Abe made the pledge as some 50 participating countries and international organizations announced an increase of $4.5 billion in total humanitarian funding this year compared with 2015 levels.

Japan's new aid, to be extended through the World Bank, came a day after Abe, who was attending the first-ever U.N. Summit for Refugees and Migrants, vowed to dole out $2.8 billion in aid for refugees over three years starting this year.