The air strikes on Thursday reportedly targeted six homes east of Khan Younis, a spokesman for the Hamas-run civil defence agency said, and also injured dozens of people. "A missile launched from Yemen was intercepted by the IAF prior to crossing into Israeli territory. Sirens were sounded in accordance with protocol," the Israeli military said in a statement, referring to its air force. The Houthi group have vowed to retaliate, including against Israel, after the US carried out deadly strikes against them in recent days. British bomb disposal expert injured in GazaIsrael extends ground operations in Gaza after deadly air strikes The Iranian-backed rebel group, which considers Israel its enemy, controls Sanaa and the north-west of Yemen, but it is not the country's internationally recognised government. The Houthis said they are acting in support of the Palestinians in the war between Israel and Hamas in Gaza. US President Donald Trump has warned Iran that it will face "dire" consequences if Yemen's Houthis continue to attack international shipping lanes. The Pentagon said it had struck 30 targets in Yemen since Saturday, in the biggest US military operation in the Middle East since Trump returned to the White House. The Houthi group first tried to attack the USS Harry S Truman in the Red Sea on Sunday following deadly US strikes on Yemen. The Israel Defense Forces (IDF) said troops had moved in up to the Netzarim Corridor, which divides the north and south of the Gaza Strip. The renewed assault on Gaza marks the end of the fragile ceasefire deal that had been in place since January. Earlier, the UN said two people - including one of its staff - had been killed after an explosion at its compound in Deir al-Balah.