Former Astro Malaysia Holdings Bhd group chief executive officer (CEO) Rohana Rozhan has vowed to extend her full cooperation to the MACC regarding its investigation into Tim Leissner's claim of using money he received from 1MDB to purchase a US$10 million (RM41.8 million) mansion in London for her.

Leissner, who is the former chief of Goldman Sachs' Southeast Asia operation, told a US federal court that Rohana was his lover at the time and had threatened to expose his role in the 1MDB scandal if he did not buy the house...