Israel attacked Gaza with warplanes on Friday, killing at least four people including a commander of the Islamic Jihad group and a young girl.
Taysir al-Jabari, a commander of the Al-Quds Brigades, the military arm of the Islamic Jihad, died in an air strike on an apartment in the Palestine Tower in the centre of Gaza City, the group said.
The health ministry in Gaza said at least four people were killed including al-Jabari and a five-year-old girl. At least 23 people were wounded and being treated at hospitals as a result of the Israeli raids.
Smoke poured out of the seventh floor of the building in Gaza City.
The Israeli attack follows days of tension with the Palestinians after the arrest of a senior Palestinian leader in the occupied West Bank.
It was not immediately clear what Israel was targeting or how much the situation would escalate. Multiple blasts could be heard and seen throughout Gaza. Israeli reconnaissance drones could be heard hovering over the besieged territory.
“The IDF [Israel Defense Force] is currently striking in the Gaza Strip. A special situation has been declared on the Israeli home front,” the Israeli military said in a statement. It said further details would follow.
Israel closed roads around Gaza earlier this week and sent reinforcements to the border as it braced for a response after the arrest of a senior member of the Islamic Jihad group in the occupied West Bank on Monday.
Fawzi Barhoum, a Hamas spokesman, said in a statement it would respond to Friday’s “escalation”.
“The Israeli enemy is the one who started the escalation against the resistance in Gaza, and a new crime was committed, and it bears the full responsibility,” said Barhoum.
“The resistance will defend our people in the Gaza Strip with everything it has and will continue to respond.”
Israel and Hamas, which governs Gaza, have fought four wars and engaged in several smaller skirmishes over the past 15 years.
Israel and Egypt have maintained a tight blockade on Gaza for 14 years, and critics say the policy amounts to collective punishment of the region’s two million Palestinian residents.