The Russian convoy that was shot at was mainly from the embassy, and occurred on 4/7/03. The explosives were probably extracted between January and early March
story from way back:
http://www.washingtontimes.com/national/20040816-011235-4438r.htm
The recent discovery by the Bush administration's Iraq Survey Group (ISG) is fueling speculation, but is not proof, that the Iraqi dictator moved prohibited weapons of mass destruction (WMD) into Syria before the March 2003 invasion by a U.S.-led coalition. ....
The shift was followed by the movement of trucks in and out of Syria suspected of carrying materials banned by U.N. sanctions. Once the shipments were made, the agents would leave and the regular border guards would resume their ...etc