Israel bombs Gaza Strip in response to rocket fire

Israeli air strikes hit four sites in the Gaza Strip on Saturday, causing damage but no injuries, officials said, after Palestinian militants fired a rocket that struck a building in southern Israel.

The four sites included a workshop, two locations for Hamas's armed wing and a military training site for militant group Islamic Jihad, the security official said on condition of anonymity.

Two of the sites were in Gaza City while the other two were in Beit Lahia, in the north of the enclave, run by Islamist movement Hamas. All of the sites have been previously targeted by Israel, the official said.

Israel's military said in a statement it had "targeted four locations that were components of Hamas's operational infrastructure in the northern and central Gaza Strip" in response to the rocket.

A rocket launched from the strip hit a building in the southern Israeli city of Sderot late Friday, damaging it but causing no injuries, the military said.

Israeli media said the rocket had hit a nursery, but the military had not provided further details.

Medics said they treated two people for shock.

No group in Gaza claimed to have fired the rocket, which came hours after Israel announced a lockdown on the city of Hebron in the occupied West Bank and cuts in monthly tax payments to the Palestinian Authority in response to attacks.

Friday's rocket is the 13th projectile fired from the Gaza Strip to have hit Israel since the start of 2016. Israel holds Hamas responsible for all rocket attacks from Gaza.