Israel has launched fresh air strikes on the Gaza Strip after killing two people in earlier raids, the Palestinian health ministry says.
The latest strikes, overnight on Friday, targeted two camps of the armed wing of Hamas, the Ezzedine al-Qassam Brigades, in central and northern Gaza, and a former Hamas security post in Gaza City. They wounded about 20 people.
An Israeli army statement on Saturday confirmed the operations and said they were in response to rockets fired into southern Israel.
Israel held Hamas responsible for "all terrorist activity coming from the Gaza Strip," the army said.
On Friday, medics in the Gaza Strip reported two Palestinians had been killed and four wounded when Israeli warplanes struck twice.
A first Israeli air strike on Friday afternoon targeted the east of Al-Bureij in the central part of the Gaza Strip, killing Basel Ahmad, 29.
Two other Palestinians were wounded in the strike, one of them seriously, sources said.
Israeli aircraft "targeted a terrorist squad during preparations to fire a rocket ... A hit was identified", the military said in a statement.
A second Israel air strike killed another Palestinian in the north of Gaza.
Hammam Abou Qadous, 20, died after being hit as he travelled on his motorbike in the northern part of the Gaza Strip on Friday evening, Palestinian medical sources said.
Two other Palestinians were slightly injured in the attack.
An Israeli army statement said "a plane of the Israeli Air Force targeted a terrorist group in northern Gaza just after the group launched a rocket that hit the Ashkelon region".
Earlier on Friday, Palestinian militants in Gaza fired two rockets that hit southern Israel, without causing casualties or damage.
The violence came despite a tenuous Egyptian-brokered truce between Israel and Gaza's Hamas rulers.
Since Monday, more than 130 rockets and mortar rounds have been fired at Israel, one of which slammed into a border police post just north of Gaza, wounding four people.
The Hamas military wing said on Thursday it had fired 120 rockets, a rare show of force from the Islamist group that had previously been observing a de facto truce.
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