At least two Gaza militants were injured on Monday night after Israeli warplanes struck two targets in southern and northern Gaza Strip, medics and witnesses said.

Witnesses and local security sources said Israeli F-16 war jets fired a missile at a military base belonging to the armed wing of the Islamic Hamas movement west of the southern Gaza Strip city of Khan Younis.

Adham Abu Selmeya, spokesman of the emergency services in the Hamas-run health ministry in the Gaza Strip told Xinhua that two people were injured in the airstrike, without giving further details.

Meanwhile, witnesses said they heard a huge explosion in northern Gaza Strip, which was another airstrike, and saw ambulances and rescue teams rush to the scene.

The Israeli airstrikes were retaliation to earlier attacks by militants from the Hamas-ruled Gaza Strip.

According to the Israel Radio, three homemade projectiles landed at an empty area in southern Israel, causing no harms nor injuries. The Popular Resistance Committees claimed responsibility for the attacks.

The group said its militants on Monday afternoon fired 10 mortar shells at several Israeli army targets in south of Israel, adding that the attacks were response "to the Zionist crimes against our people."

On Saturday, the Israeli army said that its air forces targeted militants in central Gaza Strip, who were trying to launch homemade rockets at southern Israel, killing five of them.