The Israeli airstrikes targeted what it said were militant sites including rocket launchers and a weapons manufacturing site, following at least 29 other rockets and mortars fired from the Gaza Strip at Israel over the weekend, the army said.
Two of those rockets were aimed at Beersheba, a southern city deeper into Israel than any other attack in the current round of violence. The military says its Iron Dome defence system intercepted the two rockets.
Also on Sunday, the army arrested a Palestinian in the West Bank city of Hebron. His family identified him as Hossam Dufesh. The army would not elaborate on the arrest, but Israeli forces have concentrated its search for the killers of three Israeli teens on the Hebron area.
Tensions, which have been high since the three Israeli teens were abducted on June 12, spiked last week after Palestinian teenager Mohammed Abu Khdeir was seized from his home in east Jerusalem and his burned body was found in a forest.
Police say they are still investigating the killing, but Palestinians say Israeli extremists killed the teenager to avenge the deaths of the three Israelis.
Protests spread yesterday from Jerusalem to Arab towns in northern Israel, with hundreds of people throwing rocks and fire bombs at officers who responded with tear gas and stun grenades, according to Israeli police.