Shin Bet security service agents have begun telephoning members of Palestinian terrorist organizations and warning them to leave their houses, so that they and their families will not be hurt when Israel bombs them, Palestinian sources said yesterday.

According to the sources, Shin Bet agents have contacted members of various armed organizations over the last few days and warned them that Israel plans to attack their houses. The houses in question are being targeted because Israel believes that they are being used to store or manufacture weapons, including Qassam rockets and rocket-propelled grenades.

Before dawn yesterday, the Israel Defense Forces bombed two such houses - one belonging to an Islamic Jihad operative in Gaza City and one belonging to a Hamas operative in Rafah, on the Gazan-Egyptian border. According to the army, both houses served as weapons factories.

In addition, the IDF has interrupted local radio broadcasts in several parts of Gaza in recent days, overriding the scheduled programing with warnings about planned attacks on houses that serve as arms caches. The interrupted broadcasts have included some by Hamas' Radio Al-Aqsa...