A "bitter rival" of Vieira, both before the junta (having survived Vieira's purges of the Guinea-Bissau military in the 1980s) and after Vieira's return to power, Na Waie reported surviving an assassination attempt in January 2009, when a militia assigned to the presidential palace opened fire on his staff car; the militia denied that this had been an assassination attempt.
On March 1, 2009, Na Waie was killed by an explosion in the headquarters of the Guinea-Bissau military. While witnesses reported seeing a rocket-propelled grenade, aides to Na Waie reported that a bomb was detonated under a staircase as Na Waie was heading to his office.
...Of all localities on the Western African coast - where oil now is found in one country after the other - the geological formations off Guinea-Bissau have been denominated the most promising. Guinea-Bissau's offshore areas are considered under-explored as exploration efforts repeatedly have been interrupted by political crises.