Israel-Gaza updates: Blinken tells Israel onus is on Hamas to accept cease-fire

The death toll in the IDF airstrike that hit western Rafah Sunday night has risen to at least 50 individuals, including civilians, according to Action Aid UK.

The organization said Israeli fighter jets launched eight missiles at makeshift shelters housing internally displaced persons next to UNRWA warehouses stocking vital aid.

"We are outraged and heartbroken by the recent attacks in West Rafah," Action Aid UK said in a statement Sunday.

"These shelters were supposed to be safe havens for innocent civilians, yet they became targets of brutal violence," the organization continued. "Children, women, and men are being burned alive under their tents and shelters."

Action Aid UK expects the number of casualties to rise.

-ABC News’ Victoria Beaule

A deadly airstrike has killed at least 35 people inside western Rafah, near the UNRWA logistics base in Tal Al-Sultan, according to officials at the Hamas-run Gaza Ministry of Health.

Numerous individuals remain stuck in a fire that resulted from the airstrike and in the tents destroyed by the bombardment.

The Israeli Defense Forces (IDF) confirmed the airstrike to ABC News in a statement on Sunday and acknowledged that civilians were harmed as a result of the strike.

"A short while ago, an IDF aircraft struck a Hamas compound in Rafah in which significant Hamas terrorists were operating. The strike was carried out against legitimate targets under international law, using through the use of precise munitions and on the basis of precise intelligence that indicated Hamas' use of the area," the IDF said.

"The IDF is aware of reports indicating that as a result of the strike and fire that was ignited several civilians in the area were harmed," the IDF continued, adding, "The incident is under review."

-ABC News' William Gretsky