KHAN YOUNIS, Gaza Strip (AP) — Multiple airstrikes hit Gaza’s southern city of Khan Younis overnight into Thursday, killing more than 50 people in a second consecutive night of heavy bombing, while another airstrike in the north of the Palestinian territory left more than a dozen people dead, authorities said.

On Tuesday night, Israeli fighter jets bombarded the southern Gaza city of Khan Younis in an effort to kill Muhammad Sinwar, one of the group’s top remaining military commanders. The Israeli military said it had targeted a Hamas complex underneath the European Hospital near Khan Younis.

Asked by the BBC about the scale of Israeli attacks, Marco Rubio said the US was "troubled" by the humanitarian situation in Gaza.