HAMAS GUNMEN EXCHANGED FIRE WITH PALESTINIAN POLICE NEAR THE PARLIAMENT BUILDING IN GAZA CITY ON MONDAY, AND THREE PEOPLE WERE WOUNDED IN THE BATTLE, HOSPITAL OFFICIALS SAID. THE HAMAS GUNMEN, HOLED UP IN AN ABANDONED BUILDING, FIRED A ROCKET-PROPELLED GRENADE AND THREW TWO HAND GRENADES AT THE POLICE, WITNESSES SAID. ONE POLICEMAN AND TWO CIVILIANS WERE HURT, THE ASSOCIATED PRESS REPORTED. THE FIGHTING ERUPTED IN AN AREA BETWEEN THE PALESTINIAN PARLIAMENT AND POLICE HEADQUARTERS. WITNESSES SAID THE INCIDENT BEGAN WHEN MEMBERS OF A HAMAS MILITIA CAME UNDER FIRE AND SOUGHT COVER IN AN ABANDONED BUILDING. AT ONE POINT, A PALESTINIAN POLICE CRUISER TRIED TO APPROACH, BUT WAS SHOT AT.