Palestinians say 14 civilians, including six children, have been killed in clashes with Israel in the Gaza Strip since Wednesday.
Israel intensified its raids on the strip after a college student in Sderot was killed Wednesday in a rocket attack.
Palestinian officials told news agencies that 31 Palestinians have been killed in the raids, including 14 non-combatants; among those were five boys under 16 and a six-month old baby. Reports Friday said five Palestinians, including two children, were injured in a morning air force raid on a rocket manufacturing facility.
Meanwhile, a rocket hit a Sderot home while a family was having lunch, slightly wounding a woman.
The rocket attacks from Gaza, enabled by its Hamas rulers, increased after Israel imposed a blockade last month in a bid to stop them.
One air raid Thursday bombed a site 150 meters from the home of Ismail Haniye, a Hamas leader. In recent days, rockets have reached as far north as Ashkelon, a major city.