Israel says its special forces are carrying out a targeted operation inside the main hospital in the besieged Gazan city of Khan Younis.
Medics inside Nasser Hospital say Israeli forces fired into the hospital, killing a patient and injuring several others.
A doctor at the hospital says the situation is escalating 'every hour and every minute'.
Video footage from the scene shows medics rushing with patients on stretchers through a smoke-filled corridor while gunshots ring out in the background.
A spokesperson for the Israeli Defence Forces, Daniel Hagari, said they'd received information that Hamas had held hostages in Nasser hospital.
Our correspondent in Tel Aviv, Sarah Coates, spoke to Ingrid Hipkiss.
