Electric Zoo deaths are prompting questions about the safety of music festivals, and of electronic music culture.

Several students died at the Electric Zoo festival, prompting cancellation.

The festival was scheduled to continue through Sunday, but it was shuttered on the third and final day of trance music and dancing due to the deaths.

"I just took six hits of Molly' were the final words of a 20-year-old college student who collapsed seconds later at Electric Zoo. Olivia Rotondo, from Providence, Rhode Island was then rushed to the hospital. She died from an ecstasy overdose.

Jeffrey Russ, 23, from Rochester, NY also died at Electric Zoo. There were also three overdoses at a Boston concert.

The two college students' deaths at Electric Zoo were both of an overdose of Molly, the street name for the drug MDMA, a crystallized or powdered version of Extacy.

Four other festival attendees also were hospitalized in critical condition after drug overdoses.

A representative of the Drug Enforcement Agency, Erin Mulvey, said

'We are seeing (molly) goes hand-in-hand with a lot of nightclub activity, concert venues, areas where there's a lot of teens listening to music,'.

She added, 'With these overdose deaths and the focus now with trying to get the awareness out, we're trying to get in front of the problem.'

Electric Zoo, the New York City dance music festival was being held on Randall's Island in the East River, but the final day of the event was cancelled due to the deaths.

The Electric Zoo deaths have sparked concern about the safety of electronic music festivals and dance music culture. Commenting on the Boston overdoses, a DEA official, Anthony Pettigrew, said, "There's no 'good batch' of molly."

He added, "This is stuff that's made in somebody's bathtub in either Asia, the Netherlands, Canada, you have no idea what is in this stuff. Dealers want to make more money, so they'll mix and adulterate the stuff with meth and any number of other drugs to addict people to it.'

However, concertgoers called the pair who died "irresponsible" and said they shouldn't have ruined the rave for everyone else.

Facebook user Ben Spanbock responded on Electric Zoo's Facebook page, saying: 'I really don't understand how two people could be so stupid,' he wrote.

'Yes it's sad that they died, but you literally couldn't turn around in that place without seeing a help station or a water refill. And because two yokels couldn't control themselves, the other tens of thousands pay the price. Ridiculous.'

Another raver, David Eli, wrote to the Electric Zoo organizers,

'If you cared about your patrons then you wouldn't disappoint the tens of thousand RESPONSIBLE concert goers who LIVE for the music at these festivals. While my deepest condolences go out to the families of the lives that were lost yesterday, it does not mean that everyone else needs to suffer."

What do you think of the Electric Zoo deaths? Was it right to cancel the event? Sound off in the comments below!