A man "making suspicious movements" in the rear seat of a vehicle involved in a routine traffic stop early Wednesday in Massapequa was arrested and charged with drug possession, Nassau County police said.

Police said Wayne Green, 29, of 7 McKinley Ave., Lindenhurst, was found to be in possession of 27 clear plastic bags containing "a substance believed to be cocaine," as well as 10 alprazolam pills for which he didn't have a prescription.

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He faces two counts of third-degree criminal possession of a controlled substance and one count of seventh-degree criminal possession of a controlled substance.

Police said Green was the rear-seat passenger in a 2001 Toyota stopped by Seventh Precinct officers on westbound Sunrise Highway for failure to signal a lane change at 1:20 a.m. During that stop, police said, the officers saw Green making "suspicious movements" -- and then found the drugs.

Green is scheduled for arraignment Wednesday in First District Court in Hempstead.