Yisrael Levy, 64, an underground fighter in Israel's struggle for independence who carried out the 1946 bombing of a Jerusalem hotel that killed 91 people, died Friday. The cause of death was not given. Mr. Levy belonged to Irgun Zvai Leumi, the militant Jewish underground led by Menachem Begin that fought the British for independence in the 1940s. Its deadliest operation was the bombing of the King David Hotel, a luxury six-story establishment that housed the British Government Secretariat and army headquarters. Mr. Levy later became a stationery store owner and lived a quiet life in suburban Tel Aviv.