Israeli airstrikes have killed at least 17 Palestinians in two of the Gaza Strip’s historic refugee camps and Israeli tanks pushed deeper into the enclave’s southern city of Rafah, residents and medics said, Reuters reports.

Residents reported heavy bombardments from tanks and planes in several areas of Rafah, where more than a million people had taken refuge before May. Most of the population has fled northwards since then as Israeli forces invaded the city.

“Rafah is being bombed without any intervention from the world, the occupation (Israel) is acting freely here,” a Rafah resident and father of six told Reuters via a chat app.

Palestinian health officials said one man was killed in the morning by Israeli fire on the eastern side of Rafah. Medics said they believed many others had been killed in the past days and weeks but rescue teams could not reach them.