US-Jet down?

Violence continues in Iraq, the US-military is struggling to maintain order and fighting strong resistance in many areas. Now a US jet a F-16 has crashed because of yet indeterminate cause, the US-Military states that it would be unlikely that the F-16 was shot down, because of its low attitude and of course high speed. Further the US-Military has not until now encountered any weapons that could have been used to shoot down the F-16. The jet was on a support mission for ground units which were Fallujah where an operation was taking place. On the other hand a Iraqi reporter, Muthana Shakir told Al Jazeera that the plane was shot down by a gunman and did not crash for different reasons.

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US F-16 goes down in Iraq (Al Jazeera)