Main source for this news is the Eritrean Foreign Minister himself. Ethiopian government did not allocate funds. In the second map, the area claimed is the same, but more detail is shown of the area from Ras Doumera to Dar Alwa which is illegally shown as part of Eritrea. For comparison, here is a reference map from the University of Texas Library. This was one of nine arms supply flights out of Burgos, Bulgaria.
Bystanders speak of a series of secondary explosions after the crash. .
The aeroplane crashed about a kilometre due east of Asmara Airport on a ridgeline but there are no indications it was shot down. Arms shipments have continued since. Eritrean security is understandably sensitive about these flights and some diplomats who have taken too keen an interest in recent events have been threatened with expulsion. Eritrean President leaves Libya after 2-day visit. No details on content of discussions.