The movement's fighters have a presence in Afghanistan's northern provinces and in Pakistan's Waziristan province. U.S. and Afghan officials say al-Qaeda has been building ties with the IMU.
Last year, an Uzbek named Ulugbek Kodirov was sentenced to a minimum 15 years in prison in Alabama for plotting to shoot President Barack Obama while on the campaign trial. Kodirov pleaded guilty, saying he was acting at the behest of the IMU.
According to Idaho's court system, Kurbanov has no criminal convictions but was ticketed for speeding violations twice in 2012 — once in October, when he paid a $90 fine, and another instance in May when he paid $85.