There are conflicting reports about what happened overnight at the Yarmouk weapons factory just south of Khartoum. The Sudan Tribune reports that Sudanese officials are denying reports that any foreign entity was involved and that the explosion was occurred during routine maintenance of the facility. However, the Times of Israel quotes Minister of Information Ahmed Belal Osman as saying that four aircraft coming from the east struck the facility. The Sudanese minister is quoted as saying that Sudan believes that Israel carried out the attack and that Sudan may seek to take the matter to the UN Security Council.
Weaponry from China and Iran is evidently stored and distributed from Yarmouk in addition to whatever weaponry the factory produces itself. It is entirely possible that Israel did indeed strike the factory. Israel has said nothing about the matter, its usual response to such questions.
Some might ask, why would Israel strike Sudan? It is possible that at least some of the weaponry that reaches the Gaza strip originate in Sudan. Iranian weapons delivered to Sudan could be destined for Hamas, Islamic Jihad, or others in Gaza. Considering the rocket barrages now faced by Israel and the recent cross border attacks against Israeli soldiers, it is entirely possible that Israel chose to strike at the source of the weaponry used. We will likely never know.
The extent of the damage at the factory is unknown at this time.
UPDATE*****November 25, 2012
We now firmly believe that Israel did in fact strike the complex in order to take out 40 shipping containers most likely filled with long range rockets destined for Gaza. Iranian ships docked at the Port of Sudan only a few days after the strike and were likely there to transport the weaponry to the Sinai Peninsula where they would be smuggled into Gaza. Here are a few articles that add more details.