An American official said the account of Hezbollah’s role was provided by four Shiite militia members who were captured in Iraq late last year and questioned separately.

The United States has long charged that the Iranians were training Iraqi militia fighters in Iran, which Iran has consistently denied, and there have been previous reports about Hezbollah operatives in Iraq.

But the Americans say the reports of Hezbollah’s role at the Iranian camp offer important details about Iranian assistance to the militias, including efforts Iran appears to be making to train the fighters in unobtrusive ways.

HEYET Net- NYT