Well, I know this is an ageing thread, but I found the question so interesting I wanted to have a look.
I used the original time and place at which the question was asked in order to erect the chart.
John Frawley's method of determining the truth of a rumour, based upon Lilly's method, asks us to look for the angles of the chart to be in fixed signs for a rumour to be true, and in this case the angles are mutable and cardinal.
The Ascendant ruler and the ruler of the third, the Moon and the Moon's despositor, to confirm the rumour, should be in fixed signs and angular houses, or at least, fixed signs and succendent houses. In this case, only the Moon's despositor Jupiter is fixed and succedent. The Moon, which is the Ascendant ruler, is mutable and cadent, and the third house ruler, the Sun is cardinal, even if angular. So the major testimony so far is for the rumour being false.
The third house is also afflicted by Saturn on it's cusp.
Lilly says that it is helpful for Mercury to be in a fixed sign, which is not the case here, nor does it help that Mercury separates from an infortune, again suggesting the rumour is false.
So it would seem according to this method that Osama is alive and that the rumour is not true.