Palos Park native Daniel Martinez was visiting Boston for Saint Patrick's Day in March when prosecutors say Alvaro Larrama stabbed and killed him.
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Larrama worked at the Sons of Boston bar as a bouncer, where Alisha Dumeer was the manager.
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Prosecutors say Dumeer tried to cover up Larrama's involvement by giving him a change of clothes and then throwing away his bloodied outfit.
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The suspected killer is being held without bail and the bar manager was released on her own recognizance.
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Martinez's family has also filed a civil lawsuit against the bar.
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Family of Marine stabbed to death outside Boston bar files lawsuit