Former Malaysian Prime Minister Najib Razak was arrested on Tuesday, three sources familiar with the matter told Reuters, amid an investigation into how billions of dollars went missing from a state fund he founded almost a decade ago. The authorities picked up Mr. Najib from his home after serving him with a remand order, two sources close to the family said. One of the sources said Mr. Najib was expected to be charged in court on Wednesday.

Former Malaysian Prime Minister Najib Razak was arrested on Tuesday, three sources familiar with the matter told Reuters, amid an investigation into how billions of dollars went missing from a state fund he founded almost a decade ago. The authorities picked up Mr. Najib from his home after serving him with a remand order, two sources close to the family said. One of the sources said Mr. Najib was expected to be charged in court on Wednesday.