Made in Iran?

This is becoming absurd.

The cache included what Maj. Marty Weber, a master explosives ordnance technician, said was C-4 explosive, a white substance, in clear plastic bags with red labels that he said contained serial numbers and other information that clearly marked it as Iranian.

But while the find gave experts much more information on the makings of the E.F.P.’s, which the American military has repeatedly argued must originate in Iran, the cache also included items that appeared to cloud the issue.

Among the confusing elements were cardboard boxes of the gray plastic PVC tubes used to make the canisters. The boxes appeared to contain shipments of tubes directly from factories in the Middle East, none of them in Iran. One box said in English that the tubes inside had been made in the United Arab Emirates and another said, in Arabic, “plastic made in Haditha,” a restive Sunni town on the Euphrates River in Iraq.

The box marked U.A.E. provided a phone number for the manufacturer there. A call to that number late Monday encountered only an answering machine that said, “Leave your number and we will call you back.”

I'm no expert on these matters, but wouldn't that information suggest that these materials were purchased on the open market? And, by the way, the UAE is a predominantly Sunni country. Unlike Iran.