A key figure involved in the cover-up of the spectacular 2006 murder of Mongolian national Altantuya Shaariibuu appears to have gone off the reservation, giving interviews to opposition media hinting at the involvement of Rosmah Mansor, the wife of Prime Minister Najib Tun Razak, in the conspiracy.
Deepak Jaikishan, a Kuala Lumpur-based carpet dealer who…