Iranian Arms Smugglers in US Custody In Iraq

Military spokesman General William Caldwell has confirmed that the US has detained Iranians. Top levels of the Iraqi leadership are unhappy. Two of the 10 mentioned are Iranian, the rest are not identified.

"These 10 individuals are still in the custody of coalition forces," said Caldwell, confirming a pre-dawn raid that has increased tensions between the US-led coalition and Iraq's embattled government. Iraqi leaders cited by the New York Times, which broke the story last week, said the Iranians were detained at the compound of powerful Shiite leader Abdul Aziz al-Hakim who met US President Bush at the White House this month.

And I guess I haven't been paying as much attention as I thought, I didn't know this...

Hakim's Supreme Council for the Islamic Revolution in Iraq (SCIRI) was founded by Tehran to mobilise Iraqi exiles against their own government during the Iran-Iraq war in the 1980s.
Today, the movement is an important part of Iraqi Prime Minister Nuri al-Maliki's ruling coalition.

I was aware that most Shiites in Iraq have "ties" to Iran, I didn't know sciri was actually formed in Iran.