Israel's military says troops in central Gaza fired warning shots at a group posing a potential threat, but that it was unaware of injuries.

At least 51 people were killed and more than 200 others injured by Israeli fire as they waited for aid trucks to arrive in Khan Younis in southern Gaza early Tuesday morning, the Palestinian Ministry of Health said.

Witnesses said the tanks fired at least two shells onto a route used by aid trucks. Medical facilities reported being overwhelmed by the attack, as Israel has pushed Gaza’s health system to near collapse after sustained attacks on hospitals and health sites.