Air Force helicopters fired two missiles at a house in Gaza City in central Gaza Saturday morning. The IDF said that a member of Hamas's military wing, Izzadin al-Kassam, was killed in the blast, and that the home belonged to a professor from the Islamic College in Gaza. The home, according to the IDF, was being used as a Kassam-making factory. Palestinians were preparing rockets in the house, witnesses said. At least eight people were wounded in the strike. Earlier Saturday, the IAF attacked a PA government office and a bridge in the central Gaza Strip in separate airstrikes early Saturday, Palestinian officials said. There were no reports of casualties. The first airstrike hit offices of the Hamas-controlled economy ministry, setting the building on fire. Rescue teams rushed to the scene of the attack, located near a housing complex inhabited by some 600 people. Later, an IAF airstrike destroyed a small bridge near the Bureij refugee camp in central Gaza, Palestinian officials said. The IDF confirmed both air strikes. Israeli helicopters also opened fire on an area in northern Gaza where militants had gathered to fire rockets at southern Israel, killing an 18-year-old Bedouin, Khalil Abu Naghafieb, said hospital officials.