Palestinian armed militants shout slogans at a rally on Gaza street, Dec. 12. On the day, Palestinian militants detonated a bomb in a tunnel under an Israeli army post near the border between southern Gaza Strip and Egypt Sunday night, in which six Israeli soldiers were killed. (Xinhua/AFP Photo)

    GAZA, Dec. 13 (Xinhuanet) -- Israeli Apache helicopters fired at predawn on Monday at least six missiles at Gaza City, causing no injuries but severe destruction, Palestinian witnesses and security sources said.

    The sources said that the airstrike was apparently in retaliation to a tunnel bombing under an Israeli army post near the border between southern Gaza Strip and Egypt Sunday night, in which six Israeli soldiers were killed.

    Witnesses said that Israeli helicopters and drones hovered over Gaza City, and they heard six successive explosions after several targets in northeast Gaza City were hit.

    Ambulances and firefighters rushed to the scene, where flame and black smoke were seen coming out of the targeted buildings, among them foundries and blacksmith workshops.

    Israel claims that the workshops were used in manufacturing homemade rockets and explosive devices that militants used against Israeli targets and Jewish settlements. Enditem