GAZA, March 7, 2004, (WAFA) - Israeli Occupation Forces (IOF) slaughtered, Sunday morning, fifteen Palestinian citizens and wounded eighty others in the refugee camps of al-Bureij and al-Nusseirat, in central Gaza Strip, witnesses and medics said.... Dozens of Israeli tanks and armoured vehicles, backed by Apache attack helicopters, stormed the two refugee camps under a barrage of heavy fire on people and their property causing fatal death to more than ten civilians including children, witnesses said.... "Around 03:00 a.m Israeli undercover units, backed by several tanks, swept into al-Buraij camp, amid intensive fire killing and wounding tens of people,” Ahmad al-Jadeili, a resident of al-Buraij told WAFA.... He added that "Two helicopters were hovering in the sky and opened heavy gunshots on our houses. It is horrible, I felt as in war".... Witnesses from al-Nusseirat refugee camp reported that tens of Israeli snipers occupied the roofs of high constructions and targeted civilians.... "Israeli troops besieged the house of Mohammed Awad, the soldiers positioned on the roof and began shooting at any movable body," Saed al-Shareef, an eyewitness from Nusseirat said.... Palestinian medical sources affirmed that thirteen citizens were instantly killed Sunday morning while more than fifty others were wounded, many of them are in critical conditions.... "Thirteen citizens were killed including a 14-year old child, Mohammed Badawi. Most of the wounded were shot in the upper part of their bodies, mainly necks and heads" Dr. Ibraheem al-Mosaddar, director al-Aqsa Martyrs Hospital in central Gaza Strip, told WAFA.... Tens of Palestinian ambulances rushed to the scenes of the Israeli massacre attempting to evacuate victims, but "as usual, Israeli troops targeted the paramedics and restricted their movement," hospital official in Gaza said.... Palestinian security sources told WAFA that at least 30 Israeli tanks and armoured personnel carriers (APCs) moved from the Israeli colony of "Nitzareem”, south of Gaza City, and invaded the two refugee camps....