A huge explosion damaged a house in Sheja'eya neighborhood, southeast of Gaza City. (Xinhua Photo)

    GAZA, Sept. 5 (Xinhuanet) -- At least four Palestinians were killed and 30 others injured Monday night after a huge explosion damaged a house in Sheja'eya neighborhood, southeast of Gaza City, Palestinian witnesses and security sources said.

    The blast was heard all over Gaza City, and ambulances and firefighters as well as dozens of residents rushed to the scene to evacuate the victims, security sources said.

    Witnesses said electricity was cut off right after the explosion.

    Palestinian medics in Gaza said at least four people were killed, one of them a woman, and 30 residents were injured in the explosion.

    The explosion could be caused due to an explosive device that suddenly detonated in one of houses in the overcrowded neighborhood. Sheja'eya is known as a stronghold for Islamic groups, according to witnesses.

    Local residents said Israeli helicopters flew over the area shortly before the explosion. Enditem