Israel’s military destroyed multiple high-rise buildings in Gaza City on Sunday, after warning residents to evacuate.

Some were destroyed less than an hour after an evacuation order was posted online by the military spokesman Avichay Adraee.

The military said that Hamas had positioned observation posts and ways to gather intelligence about troop movement in the area, and that Hamas militants were poised to strike Israeli troops. It didn’t provide evidence.

The military also said that, in addition to advance warnings, it used precise munitions and aerial surveillance to reduce the chance of harm to civilians.

Residents said the Kauther tower in the Rimal neighborhood was flattened to the ground. There were no immediate reports of casualties.

“This is part of the genocidal measures the (Israeli) occupation is carrying out in Gaza City,” said Abed Ismail, a Gaza City resident. “They want to turn the whole city into rubble, and force the transfer and another Nakba.”

The word Nakba is Arabic for catastrophe and refers to when some 700,000 Palestinians were expelled by Israeli forces or fled their homes in what is now Israel, before and during the 1948 war that surrounded its creation.

Israeli strongly denies accusations of genocide in Gaza.

“The skyline of Gaza is changing,” Defense Minister Israel Katz wrote on X along with footage of the strikes that destroyed one of the buildings.