The 1940s and the establishment of Israel saw rapid emigration of Jews out of Yemen, in the wake of anti-Jewish riots and massacres. By the late 1990s, only several hundred remained, mainly in a northwestern mountainous region named Sa'ada and town of Raida. Houthi members put up notes on the Jews' doors, accusing them of corrupting Muslim morals. Eventually, the Houthi leaders sent threatening messages to the Jewish community: "We warn you to leave the area immediately... We give you a period of 10 days, or you will regret it."