REUTERS - Israeli warplanes bombed a Hamas security outpost and tunnels by the Gaza border with Egypt on Tuesday, after a rocket fired from the coastal territory struck an Israeli town, Israeli and Hamas sources said.

Palestinian medics said a woman in Gaza suffered moderate wounds from one of several air strikes against tunnels Israel says are used to smuggle weapons into the coastal territory.

Another raid targeted a Hamas outpost near a border fence with Israel, a Hamas source said. It was the first time Israel has attacked the Islamic militant group since a Jan. 18 ceasefire went into effect after an Israeli offensive.

An Israeli military spokesman confirmed the air raids saying Israel targeted four border tunnels and two sites in Gaza where weapons were produced, in response to rocket and mortar fire aimed at Israel from the Hamas-ruled Gaza Strip.

Earlier a rocket fired from Gaza damaged a home in the southern Israeli town of Sderot, causing no injury. None of the militant groups in Gaza claimed responsibility for the attack.

The rocket was the first to strike inside an Israeli town in several weeks. Rocket fire from Gaza had previously dropped since the Israeli offensive against Islamic militants in the coastal territory four months ago.

The Israeli spokesman said 175 mortars and rockets have been fired at Israel since the campaign ended, while there were at least 500 such attacks aimed at Israeli towns during the 22 days of fighting.

An Israeli air strike responding to mortar fire from Gaza killed two Palestinians on May 2. That attack also targeted tunnels beneath the Gaza-Egypt border.