Israeli officials said the three raids, targeting a residential area in the north of the Palestinian enclave and two in the south, were in response to an earlier missile attack by Palestinian militants.
"Our planes attacked terrorist installations in the north of the region and two tunnels located in the south which could serve for attacks against Israel," an Israeli defence spokesman said, confirming the raids.
On Thursday evening, "a rocket fired from the north of the Gaza Strip fell in the Ashkelon region without causing any injuries," south of Tel Aviv, the spokesman told AFP. The Ansar al Sunna group claimed responsibility for the attack, in a statement.
Israel launched a devastating assault on the Hamas-run Gaza Strip in December 2008 aimed at halting rocket fire. Some 1,400 Palestinians and 13 Israelis were killed in the 22-day war.
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