At the daily press briefing at the US State Department, the Department Spokesman was asked about Dr. Kian Tajbakhsh.
The transcript related to this questions is posted below.  (The full transcipt can be found here.)

Ian Kelly
Department Spokesman
Daily Press Briefing
Washington, DC

July 13, 2009

QUESTION: Do you have any update at all on the Iranian American scholar who was detained last week?

MR. KELLY: Yes, we’re deeply concerned of reports that an Iranian American scholar has been unjustly detained in Iran. Due to Privacy Act considerations, we’re not able to comment on the details of his arrest and imprisonment. It’s unfortunate that the Iranian Government is making choices that only serve to isolate Iran from the international community. We urge the Iranian authorities to immediately release Kian Tajbakhsh as well as return the passports of all Americans being kept in Iran on groundless charges.