A good number used to live openly in the state of Penang until towards the end of the 1970s, when many emigrated due to growing state-sanctioned antisemitism. They were also found elsewhere in the nation, especially in Negeri Sembilan and Malacca. Indications of the growing racial and religious hostility in the nation has caused many Malaysian Jews to leave or flee the country. - Wikipedia
You may interested to read the following articles:
History of the Jews in Malaysia - Wikipedia
ONE FAMILY’S WORLD OF JUDAISM IN MALAYSIA - jewishtimesasia.org
Malaysia’s forgotten Jewish community - bechollashon.org