Rebel authorities in Yemen said Tuesday that a Saudi-led air strike had destroyed the navigation station of Sanaa international airport, which is critical to receiving already limited aid shipments.

The strike "led to the total destruction of the VOR/DME radio navigation system, taking it offline and thus halting the only flights at Sanaa airport -- those of the United Nations and other international organisations delivering humanitarian assistance," the rebel-run General Authority for Civil Aviation said in a statement.