A lawyer told a High Court in Kuala Lumpur that a 42-year-old marketing executive from Selangor had converted her two children in 2016, then aged three and seven, to ensure she gained custody.

Lawyer K Shanmuga for the former husband, a 46-year-old businessperson, said the woman and his client were married according to Buddhist rites but the wife converted to Islam in December 2015...