Israel’s chief military spokesperson Rear Admiral Daniel Hagari has said Israel had detained more than 200 suspects from Gaza in the last 48 hours and dozens were taken to Israel for questioning, Reuters reports.

An Israeli commander, Brig. Gen. Dan Goldfuss, said in a video message recorded in Khan Younis that his forces were fighting house to house and “shaft to shaft”, a reference to tunnel shafts.

As he spoke, gunshots rang out in the background.

Since the Israeli military campaign began, most of Gaza’s 2.3 million people have been driven from their homes, and residents say it has become almost impossible to find refuge.