Israeli warplanes struck targets in the Gaza Strip today in response to rocket fire towards southern Israel.
They were the first air strikes launched by Israel since an informal ceasefire ended eight days of cross-border fighting between Israel and Hamas-ruled Gaza.
An Israeli military statement said its planes targeted "two extensive terror sites" with "accurate hits".
Palestinian officials said no one was hurt in the air strikes and no damage was reported in northern Gaza.
The air raids followed the third successful rocket attack on Israel since the November ceasefire.
The military reported that Gaza militants yesterday fired at least one rocket toward southern Israel. No one was hurt and no damage was caused.
The attack was the first since rockets were fired during President Barack Obama's visit to Israel two weeks ago.
There was no immediate claim of responsibility for the rocket fire. The Israeli military says it holds Gaza's Islamic Hamas rulers responsible for any attack against the Jewish state.