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TEHRAN, Iran (AP): The latest developments as Iran and world powers implement a landmark deal reached last year to curb Iran's nuclear activities in exchange for the lifting of international sanctions (all times local).
The Massachusetts man who had been detained in an Iranian prison for 40 days and released has returned home.
The Boston Globe reports that family greeted 30-year-old Matthew Trevithick early Sunday evening when he landed at Boston's Logan Airport. He is from Hingham, about 17 miles southeast of Boston.
Iranian officials released Trevithick on Saturday.
Trevithick had traveled to Iran in September for a language program at an institute associated with Tehran University. It is unknown why he was held in Evin Prison for more than a month.
Trevithick is the co-founder of SREO, a humanitarian crisis research center.
His family previously said they were "profoundly grateful" for his release.
Phone messages were left with Trevithick's mother and father.
Trevithick's release was independent of a prisoner exchange between the U.S. and Iran that saw four American prisoners discharged.