Vali Reza Nasr, a senior Obama administration advisor on Iran, has come to Iran. Iranian parliament speaker Ali Larijani and former parliament speaker Gholam-Ali Haddad-Adel may be behind the visit. "President Mahmoud Ahmadinejad was informed well after Nasr entered the country," Tabnak reported on Wednesday. Nasr was appointed senior advisor to Richard Holbrooke -- the special US envoy to Afghanistan and Pakistan. Tabnak and Fararu claim the unannounced trip by the US official to be linked to the recent release of Iranian-American journalist Roxana Saberi.