A Michigan man is on his way home, after serving four years in an Iranian prison.

Amir Hekmati, a Marine Corps veteran and Flint Central High School graduate, was arrested in August of 2011 after being accused of being a spy.

Hekmati has the distinction of being the longest imprisoned American citizen in Iran. He was originally sentenced to death, but the decision was overturned and reduced to 10 years.

Hekmati is among a group of three other U.S. citizens released early Sunday morning.

His wife, Sarah Hekmati, testified on his detention before the House Foreign Affairs Committee in June of 2015 and was present at President Obama’s recent State of the Union speech.