Israel temporarily closed four of its diplomatic missions abroad in recent days because of suspicions that they were under threat of attack, an Israeli official said on Tuesday. He refused to specify their locations, for security reasons, but he said that two had partially reopened. The precautions were taken after “unusual occurrences were identified recently around a few missions abroad,” the Israeli government said in a statement. The Israeli Counter-Terrorism Bureau had issued a travel advisory on Friday warning of a heightened threat against Israeli and Jewish targets abroad because of anniversaries this week of the deaths of two senior Hezbollah figures. It listed Egypt, Turkey, Georgia, Armenia, Ivory Coast, Mali, Mauritania and Venezuela as countries with a heightened risk. Imad Mugniyah, a Hezbollah commander, was killed by a bomb in Damascus in February 2008, and Hezbollah blamed Israel for his death. Sheik Abbas Musawi, a leader of Hezbollah, was killed by Israeli forces in February 1992.