It was 1996 when John Oliva, then an officer with the Suffolk County Police Department, first saw graffiti featuring the name MS-13. 


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Investigations

Watch: Ride along with ex-cop who fought MS-13 on LI

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Experts say the case highlights how a failure to improve roadways can leave taxpayers liable for damages and legal bills.

Nassau 'ignored' a dangerous intersection. Now it could be on the hook for tens of millions.

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