Justin Timberlake Arrested in New York for DWI

Justin Timberlake got lit up by cops in New York -- and was taken into custody for a DWI ... TMZ has learned. A rep for the Sag Harbor Police Department tells us the singer is currently in custody at their station ... as SHPD wouldn't disclose more information at this time. But TMZ has confirmed he was arrested for driving while intoxicated. As of this writing, Justin is still in custody -- although it's routine…