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Electric Zoo Festival Tightens Security

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A general view of the crowd and atmosphere during Electric Zoo 2013 at Randall's Island on August 31, 2013 in New York City.

Two concertgoers died at last year's event.

Heightened security is in place for a New York City music festival where two people died last year.

Electric Zoo Festival Makes Anti-Drug PSA

Electric Zoo officials say they're beefing up plainclothes security and using off-duty and former NYPD officers with a background in drug investigations.

Medical precautions also are being taken at the Friday through Sunday event.

Organizers also will shorten the length of each day's show by two hours.

The final day of last year's festival was called off after two people died from an overdose of MDMA combined with hyperthermia.

This year, ticket buyers will have to watch a two-minute video about MDMA, also known as molly or ecstasy. The code to activate wristbands will be in the video.

The festival is being held on Randall's Island.