The US State Department says it's concerned by reports that a Lebanese man with US residency has been detained in Iran.
Iranian state broadcaster IRIB reported the arrest of IT expert Nizar Zakka, saying he is linked to US military and intelligence agencies.
The reported arrest is the latest in weeks to target a visitor with U.S. ties.
Speaking at the US State Department, spokeswoman Elizabeth Trudeau said the US government takes these reports very seriously but that the issue is separate from the nuclear deal agreed with Iran in July intended to block its path to atomic weapon.
IN:"The JCPOA..."
OUT: "...highest priority"
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