U.S. aid chief Samantha Power arrived in Egypt's Sinai Peninsula on Tuesday, where she is expected to announce more than $21 million in additional assistance for the Palestinian people, a U.S. Agency for International Development (USAID) spokesperson told Reuters.

USAID Administrator Power arrived in Al Arish with a delivery of 36,000 pounds of food assistance and medical supplies airlifted by the Department of Defense from Jordan and intended for Gaza, USAID spokesperson Jessica Jennings said.

The additional assistance that Power will announce on Tuesday will support the provision of hygiene and shelter supplies, food and other assistance for residents of Gaza and the West Bank affected by the Israel-Palestinian conflict.

The funds will also support psychosocial care and critical health services along with the establishment of a NGO-operated field hospital in Gaza that will provide in-patient care.