The brothers have been in the U.S. for over five years, with Tamerlan having studied at Bunker Hill Community College.

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Tamerlan Tsarnaev had studied at Bunker Hill Community College and wanted to become an engineer, according to those who knew him.

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Tamerlan excelled in school but dropped out of Bunker Hill Community College because of money, according to the family's landlord, Joanna Herlihy.

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Tamerlan Tsarnaev studied accounting as a part-time student at Bunker Hill Community College in Boston for three semesters from 2006 to 2008, the school said.

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He studied engineering at Bunker Hill Community College just outside Boston, but had taken the year off to train as a boxer, sources told CNN.

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