More than 630 trucks transporting humanitarian supplies entered the Gaza Strip on Sunday, with at least 300 of them travelling to the territory’s besieged and bombed north, the UN’s aid chief Tom Fletcher said, Al Jazeera reports.

But the UN’s undersecretary-general for humanitarian relief also warned that there is still “no time to lose” in getting aid into Gaza.

“After 15 months of relentless war, the humanitarian needs are staggering,” Fletcher said on social media.