"The message to the driver: We know law enforcement is going to get to you, " Abraham to CNN affliate WABC.

CNN: Expectant parents killed in car crash, baby survives

Many students at the university in East Garden City, New York, wore white ribbons on their gowns in tribute to Andrea Rebello, CNN affliate WCBS reported.

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The young couple were "preparing for the most joyous moment in life, to become parents, ready to build a castle to the future and build a family, " he told CNN affliate WABC.

CNN: Suspect in Brooklyn hit-and-run proclaims his innocence