According to today's NYT, via AP:
The SEC formally investigating charges bribery allegations against Kellogg Brown and Root, a Halliburton subsidiary. Most of these payouts allegedly occured while Dick Cheney headed Haliburton.
The SEC is investigating allegations that KBR was involved in paying $180 million in bribes to get a natural gas project contract in Nigeria.
The Justice Department is also reviewing documents voluntarily provided by Halliburton.