Several people were arrested at Southampton night spots during the July Fourth weekend on drug charges involving cocaine, ketamine, Ecstasy and GHB, police said. Two suspects sold drugs to undercover police officers, Southampton Town police said.

At Tavern, in Southampton, John P. Gibbons, 31, of East Patchogue, was arrested after selling cocaine to an officer, police said. Several other suspects were arrested after officers saw them using drugs outside the club, police said.

In the Neptune Beach Club parking lot, Christopher B. Ferchland, 28, of Farmingville, was arrested after selling Ecstasy to an undercover police officer, police said.

And at the Tiana Beach parking lot, several more arrests were made after suspects were seen using or holding drugs, police said.

Ferchland and Gibbons each face a felony count of drug sales and several counts of drug possession.

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Nikolay Blinder, 28, of Brooklyn; and Ali J. Kazinetz, 23, of Boca Raton, Fla.; each face a misdemeanor charge of seventh-degree drug possession. Michael A. Anderson, 30, of East Northport, faces two such charges, police said

Robert M. Bruno, 25, and Gina Marie Iommarini, 28, both of Brooklyn; Vincent M. Lancia, 20, of Dix Hills; Michael J. Grippo, 17, of Manorville; and Michael A. Rincon, 20, of Hampton Bays, each face a charge of unlawful possession of marijuana, a violation, police said.