A top U.N. official says hard-hit northern Gaza is now in “full-blown famine” after more than six months of war between Israel and Hamas and severe Israeli restrictions on food deliveries to the Palestinian territory.

Cindy McCain, the American director of the U.N. World Food Program, became the most prominent international official so far to declare that trapped civilians in the most cut-off part of Gaza had gone over the brink into famine.

“It’s horror,” McCain told NBC’s “Meet the Press” in an interview to air Sunday. “There is famine — full-blown famine — in the north, and it’s moving its way south.”

The panel that serves as the internationally recognized monitor for food crises said in March that northern Gaza was on the brink of famine and likely to experience it in May. Since March, northern Gaza had not received anything like the aid needed to stave off famine, a U.S. Agency for International Development humanitarian official for Gaza told The Associated Press