MANILA - One of the five individuals who died at a party in Pasay City two weeks ago tested positive for illegal drugs, a toxicology test by the National Bureau of Investigation (NBI) showed.

"We're confirming that two illicit substances were found in one of the victims' body. It was tested and confirmed by our forensic division," said Dr. Rommel Papa, chief of staff of the NBI Forensic Investigation Service.

Papa identified the two substances as MDMA methylene homolog and methylenedioxy cathinone.

MDMA methylene homolog is ecstasy combined with laboratory chemicals, which, Papa stressed, are not fit for human consumption, while methylenedioxy cathinone is a new psychoactive substance.

The victim, whose name and gender were withheld by the NBI, tested negative for alcohol.

According to Papa, the drugs found in the victim's body "play" with the chemicals in a person's brain. These alter one's mood, increase heart rate and blood pressure, and cause muscle spasms.

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"It would be a feeling of being euphoric, elated, elevated mood, being so happy, palpitations, being hyperactive. These are all happening," he said.

"In a way, you really don't know when... It comes to a point where it just all stops because it was just too much."

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Papa, meanwhile, called on the public not to easily label the victims as drug users, noting that the toxicology test does not show how the drugs passed into their system.

"The person tested positive for the presence of a prohibited drug, but how that drug passed into the system is another question.

"Let us not be judgmental to label them as such. They are also victims. They may be willing or they were not willing or they don't even know what they took. We're saying these as possibilities. Let us not judge them and let us not put labels," Papa said.

READ: Witness claims drugs sold during Pasay concert

Five people died at the Close-Up Forever Summer event on May 21 after allegedly taking drugs, including green amore which contains a lethal mix of ecstasy and shabu, that were supposedly sold by two people outside the concert venue.

One of the individuals who allegedly sold illegal drugs at the massive party was arrested by NBI agents last Saturday, and seized from him were ecstasy tablets, packets of cocaine, and green-colored capsules suspected to be the party drug "green amore." were seized from the suspect.

The NBI has said syndicates often take advantage of rave parties and similar events to peddle lethal narcotics. - With a report from Zhander Cayabyab, dzMM