Palestinian medical officials say an Israeli aircraft has fired rockets at a car traveling in the southern Gaza Strip, killing a senior Palestinian militant and wounding at least 10 other people.
Palestinian medics say three of the wounded are in critical condition.
An Israeli army statement said aircraft had targeted a senior militant accused of involvement in sniper fire and other attacks against Israeli troops.
Israel repeatedly warned earlier this week that it would launch strikes against Palestinian targets to avenge a suicide bombing Monday inside Israel.
The Palestinian militant Islamic Jihad organization claimed responsibility for Monday's blast, which killed five Israelis in Netanya.
Earlier this week, Israeli Defense Minister Shaul Mofaz ordered the army to resume its practice of targeting senior militants for assassination.