September 22, 2009 - Iranian President Mahmoud Ahmadinejad publicly insists that the American hikers represented illegal entry and that he has no control over the case.
October 2009 - The Iranian government allows a Swiss diplomat to visit them at Evin Prison.
November 5, 2009 - U.S. Secretary of State Hillary Clinton meets with the detainees' families.
November 9, 2009 - Iran charges the three with espionage.
December 14, 2009 - The Iranian Foreign Minister of Affairs Manouchehr Mottaki states the three will stand trial.
February 2, 2010 - Iranian President Mahmoud Ahmadinejad announces the possibility of an exchange for Iranians serving sentences in America.
February 3, 2010 - Secretary of State Hillary Clinton says that there are no negotiations taking place between Washington, D.C. and Iran regarding prisoner exchanges.
March 9, 2010 - The families of the three detained hikers speak by phone to the hikers for the first time since they were jailed.
May 20, 2010 - The detainees' mothers are allowed to visit their children.
May 21, 2010 - The mothers are allowed a second visit, and the detained hikers speak publicly for the first time at a government-controlled news conference.
August 1, 2010 - Iran restates the three should be tried for illegal entry to Iran.
August 5, 2010 - Reports surface that Shourd is being denied medical treatment.
September 14, 2010 - Sarah Shourd is released on humanitarian grounds from Evin Prison on $500,000 bail.
September 19, 2010 - Shourd speaks publicly to the press in New York.
September 24, 2010 - Shourd and her mother meet with Iranian President Mahmoud Ahmadinejad in New York to discuss the release of her friend, Josh Fattal and her fiancé, Shane Bauer.
November 6, 2010 - Josh Fattal, Shane Bauer and Sarah Shourd are scheduled for trial on charges of spying in Iran's Revolution Court, but the trial is postponed.
November 27, 2010 - Two days after Thanksgiving, Josh Fattal and Shane Bauer are allowed to call home for the second time. Each call lasted about five minutes.
January 31, 2011 - Iran issues a summons for Sarah Shourd to return to Tehran for a trial on espionage charges. The trial is scheduled for February 6, 2011.
February 6, 2011 - Josh Fattal and Shane Bauer's trial begins. Sarah Shourd has not responded to a court summons to return to stand trial.
May 4, 2011 - Sarah Shourd announces she will not return to Tehran to face espionage charges in a court hearing scheduled later in the month.
May 11, 2011 - The trial is delayed again after the suspects are not brought from the prison to the courthouse.
July 31, 2011 - Fattal and Bauer's final hearing takes place as closing arguments are presented.
August 20, 2011 - Josh Fattal and Shane Bauer each receive five years for spying and three years for illegal entry, according to state-run TV. They have 20 days to appeal.
August 28, 2011 - Attorney Masoud Shafiee announces that he has filed an appeal in the case. He says it could take from a few days to few months for the court to respond.
September 13, 2011 - President Mahmoud Ahmadinejad tells NBC in an interview, "We tried last year to free one of the three persons and we are also trying to make arrangements for the freedom of the other two. I think these two persons will be freed in a couple of days." Josh Fattal and Shane Bauer will be released from Tehran's Evin prison after a $500,000 bail is paid for each of them, their attorney, Masoud Shafiee, says.