On 3 April 1948, the Haganah launched Operation Nachshon to capture the high ground on both sides of the Tel Aviv-Jerusalem highway. On 9 April it fought to regain Castel (at Latrun); simultaneously, the Irgun and Lehi forces attacked the Deir Yassin village at the western end of Kanfei Nesharim Street. Many of the inhabitants were killed in the attack, now known as the Deir Yassin massacre. The Israelis expelled the surviving residents and repopulated the area with Orthodox Jewish immigrants from Poland, Romania, and Slovakia; the center of the village was renamed Givat Shaul Bet. Today, the remaining buildings of Deir Yassin are part of the Kfar Shaul Mental Health Center at the border between Givat Shaul Bet and Har Nof.