GAZA CITY, GAZA STRIP, MAY 2, SPA -- AN EXPLOSION DESTROYED A BUILDING INSIDE A PALESTINIAN NATIONAL SECURITY COMPOUND IN THE NORTHERN GAZA STRIP ON TUESDAY, KILLING TWO POLICE OFFICERS AND WOUNDING SEVEN OTHERS, PALESTINIAN SECURITY OFFICIALS SAID. THE ISRAELI ARMY DENIED ANY INVOLVEMENT IN THE EXPLOSION, ACCORDING TO A REPORT OF THE ASSOCIATED PRESS. ISRAEL HAS BEEN FIRING ARTILLERY SHELLS INTO NORTHERN GAZA IN RECENT WEEKS IN RESPONSE TO PALESTINIAN ROCKET FIRE AT ISRAEL. THE CAUSE OF THE BLAST, WHICH COLLAPSED A ONE-FLOORBUILDING INSIDE THE COMPOUND IN THE TOWN OF JEBALIYA, WAS NOT IMMEDIATELY KNOWN, ACCORDING TO PALESTINIAN SECURITY SOURCES. MOSUD SALEM, A SECURITY OFFICER, SAID HE WAS LEAVING THE COMPOUND "WHEN SUDDENLY A BIG EXPLOSION SHOOK THE AREA AND A BIG CLOUD OF WHITE SMOKE SHOT UP." --SPA 1347 Local Time 1047 GMT www.spa.gov.sa/357825