(NewsNation) — Israel’s military is poised to evacuate Palestinian civilians from Rafah and assault Hamas hold-outs in the southern Gaza Strip city, a senior Israeli defense official said Wednesday, despite international warnings of a humanitarian catastrophe.

A spokesperson for Prime Minister Benjamin Netanyahu’s government said Israel was “moving ahead” with a ground operation, but gave no timeline.

The defense official said Israel’s Defence Ministry had bought 40,000 tents, each with the capacity for 10 to 12 people, to house Palestinians relocated from Rafah in advance of an assault.

Video circulating online appeared to show rows of square white tents going up in Khan Younis, a city some 3 miles from Rafah. Reuters could not verify the video but reviewed images from satellite company Maxar Technologies which showed tent camps on Khan Younis land that had been vacant weeks ago.

An Israeli government source said Netanyahu’s war cabinet planned to meet in the coming two weeks to authorize civilian evacuations, expected to take around a month.

The anticipated move into Rafah comes as U.S. President Joe Biden on Wednesday signed into law a bill that includes about $26 billion in aid for Israel and a surge of about $1 billion in humanitarian relief for Palestinians in Gaza.

Reuters contributed to this story.