Six men killed in missile attack on their vehicle in central Gaza.
Six Hamas fighters were killed in an Israeli missile strike on Monday.
In one of Tuesday’s attack, two Palestinian boys were killed and three others wounded when the Israeli army launched a missile.
A Palestinian health ministry official said the two boys – aged 11 and 12 – were in an area close to where fighters had fired rockets into Israel.
The Israeli army said it fired on two Palestinians standing next to a rocket launcher following a rocket attack by Hamas fighters.
Earlier on Tuesday, an Israeli air attack killed three fighters from Islamic Jihad in the Gaza Strip near the border area.
Israel has carried out a number of operations inside Gaza since Hamas took full control of the territory in June.
The three men were taken to the Nasir hospital mortuary in Khan Yunis.
An Islamic Jihad spokesman said the group would continue firing rockets into Israel.
West Bank raid
Earlier on Tuesday, a Palestinian fighter was shot dead in clashes with Israeli soldiers in the al-Ain refugee camp in the West Bank city of Nablus.
Nasir Mabrouk belonged to the Abu Ali Mustafa Brigades, the armed wing of the Popular Front for the Liberation of Palestine.
The Israeli operation in the camp, which started two days ago, has included the arrest of a number of people living there and the searching of many buildings.
On Monday, six Hamas fighters were killed in an Israeli air strike on a Jeep in the al-Bureij refugee camp in central Gaza.
The latest deaths took to 5,831 the number of people killed in Israeli-Palestinian violence since the start of the second Palestinian uprising in 2000, the vast majority of them Palestinian.