Yusef Staine was shot and killed in February of 2022 by a man he was traveling with, according to police.
20-year-old shot and killed on LIRR train
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It happened on a Penn Station bound train on the Ronkonkoma line.
On Thursday, Suffolk County Police arrested 20-year-old Yonkers resident Nicholas D'Agostino.
He has been charged with second degree murder and will appear in court on Friday.
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Police said that all along they believed the killer and victim knew each other.
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There's no word yet on a motive.
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