GAZA/JERUSALEM, Feb. 6 (Xinhua) -- Israeli aircrafts struck on Monday using air-to-ground missiles three military posts belonging to Hamas movement in northern Gaza, and one civilian was lightly injured, according to medical and security sources in Gaza.

Israel's military said the strikes retaliated a rocket that was fired from Gaza in the morning.

"Israel Defense Forces will not tolerate rocket fire towards civilians and will continue to ensure security and stability in the region," a spokesman for the military said a statement said.

The Israeli airstrikes on the Gaza Strip came several hours after one makeshift rocket was fired from the Hamas-ruled enclave into southern Israel, no injuries or damages were reported, according to Israel Public Radio.

No one claimed responsibility for firing the rocket, which landed at an empty area on the shores of the southern Israeli town of Ashkelon.

On Monday afternoon, eyewitnesses and Hamas security officials said they heard three huge explosions in northern Gaza Strip, which were a result of the Israeli warplane strikes on three Hamas military posts.

It is the first time that Israel officially announces that a rocket fired from Gaza into Israel since last October.

In 2014, Egypt brokered a cease-fire between Israel and Hamas ending 50 days of a large-scale Israeli air and ground military offensive, waged on the Gaza Strip for 50 days, leaving around 2,200 Palestinians and 70 Israelis dead.