Three people died in Moscow on Friday after dry ice was poured into a swimming pool at the birthday party of Yekaterina Didenko, an Instagram influencer, the BBC reported.

Didenko's husband is said to be among the three people who died in the incident.

The BBC reported that the dry ice was dumped into a pool to help partygoers cool off after leaving a sauna.

But other reports say the dry ice may have been poured into the pool to create "visual effects."

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Three people died Friday after dry ice was poured into a swimming pool at a party in Moscow, according to the BBC.

The party was hosted by Yekaterina Didenko, an Instagram influencer who was celebrating her 29th birthday at a pool complex, the BBC reported.

Didenko's husband is said to be one of the three people who died.

Guests of the party reportedly choked and several lost consciousness when they entered the pool. Dry ice is a solid form of carbon dioxide, which can suffocate people if there isn't proper ventilation.

It was not immediately clear why the dry ice was poured into the pool at the party venue.

The BBC reported that the ice was meant to cool the swimming-pool water to help guests cool off after exiting a sauna. The Daily Mail and the AFP news agency via The Moscow Times reported that the dry ice might have been put into the pool to create visual effects.

A New York State Department of Health web page about the dangers of dry ice says that symptoms of overexposure to dry ice include "headache and difficulty breathing, and with greater exposure, nausea and vomiting."

The Department of Health page also states that if enough carbon dioxide gas is present, a person can lose consciousness or die.

On Friday, Didenko posted an Instagram photo for her birthday. Following the party, Didenko apparently shared a video on Instagram indicating that her husband was at intensive care, the BBC reported.

29! Один из немногих раз в жизни, когда праздную свой день рождения! Спасибо всем, кто уже поздравил😘 Каждому ответить не могу- но просто знайте, мне очень приятно))) А кто ещё нет, жду поздравления в виде 💖💖💖 A post shared by Я Катя, аптечный РЕВИЗОРРО (@didenko.katerina) on Feb 28, 2020 at 7:54am PST Feb 28, 2020 at 7:54am PST

Didenko has more than 1 million followers on Instagram, and, the BBC said she used her social-media platform to share "tips about how to save money on pharmaceutical products."