"Former rebel leaders told the BBC that they posed as merchants in meetings with charity workers to get aid money. They used the cash to fund attempts to overthrow the government of the time. One rebel leader estimated $95m (£63m) - from Western governments and charities including Band Aid - was channeled into the rebel fight." For the whole story check the BBC webpage.
While the numbers may be wrong the fact is likely to be true. The question about the usefulness of aid keeps reemerging: I think there are but two options: Either drop it altogether or tighten the conditionalities.
While the first is morally difficult (even though several aid projects have done more harm than good this is certainly not true for the entirety of them) the second option is likely to remain as flawed as the current situation.