Gaza City, Gaza Strip, June 11, SPA -- Palestinian gunmen andsecurity forces exchanged fire before dawn Saturday in Gazabut no one was injured, witnesses and security officialssaid. The shootout began when at least 40 gunmen from variousPalestinian groups attacked a security headquarters in thecity. Shooting continued intermittently for three hours, The Associated Press reported. Soon after the fighting stopped shots were fired near theGaza house of a Palestinian security chief, Brig. Gen.Rashid Abu Shbak, but no injuries were reported.--SPA1441 Local Time 1141 GMT www.spa.gov.sa/269033