(KUNA) -- Unidentified gunmen opened fire Monday on a security officer in Gaza but he was not harmed, eyewitnesses said. The witnesses added the gunmen opened fire on a senior Palestinian national security officer while he was in a military vehicle and that two of his bodyguards were wounded. Police and Palestinian security forces rushed to the scene to investigate the incident, according to the witnesses.Meanwhile, four Palestinians were wounded last night during an Israeli raid that targeted east Deir Al-Balah and Al-Breij camps in Gaza. Palestinian security sources said that Israeli tanks stationed along the border line fired missiles on a Palestinian house in the eastern part of Deir Al-Balah. One of the missiles fell in the house wounding two children and damaging the house and a private vehicle. Israeli tanks also opened fire on several civilians wounding two people, one of them seriously.