Gaza – Ma'an – Israeli jets bombed a northern Gaza Strip building on Sunday morning.

No casualties were immediately reported.

The overnight airstrike "was in response to a Qassam rocket fired from Gaza into Israeli territory on Saturday morning," the country's military said in a statement to Ma'an.

Israel claimed the building had housed the entrance to an underground tunnel. "The tunnel was intended to be used for an infiltration into Israeli territory in order to execute a terrorist attack against Israeli citizens or IDF [Israel Defense Forces] soldiers."

The statement went on to say that the building allegedly housing the entrance to the tunnel was located at about a kilometer and a half away from the border fence in the north.

The latest attack came amidst increasing violence in the besieged coastal strip.

A homemade projectile fired from northern Gaza struck an open field in the western Negev on Saturday. Hebrew news sources reported that it landed in the Sdot Negev Regional Council area in southern Israel, causing no injuries or damage.

There was no immediate claim of responsibility for the attack, which was thought to be in retaliation for an Israeli airstrike early Tuesday morning that killed three Palestinians and injured nine others.

The Israeli military said that attack came in response to mortar fire from Gaza.

According to Israeli sources, Palestinians fired two or three mortar shells from northern Gaza at the Zikim military base, south of the city of Ashkelon, on Monday night. One Israeli soldier was reportedly injured in the head when he dove for cover.

The An-Nasser Salah Ad-Din Brigades, the armed wing of the Popular Resistance Committees (PRC), said that they fired four mortar shells at Israeli forces operating in an area called Al-Amour, near the Sufa border crossing on Monday.

Israeli soldiers shot two Palestinians in northern Gaza, killing one, on Monday evening. The shooting took place in the Al-Atatra area north of Beit Lahiya. Israeli military sources told reporters two "suspicious" persons had approached the border with Israel and ignored warning shots.