A man was reportedly left in a coma after liquid nitrogen was poured in to a swimming pool at an event organised by German drinks company Jagermeister. A further eight revellers were hospitalised.
Video posted online which claims to have been taken at the pool party in Leon, Mexico shows guests jumping into a swimming pool covered in smoke before coughs can be heard.
It is not long before those in the pool appear to have difficulty breathing and are helped out of the water.
According to reports eight people were taken to hospital and have been released while a 21-year-old remains in intensive care, however event organisers Jagermeister say that while the man still in hospital is under observation and is expected to be discharged later today.
A statement from Jagermeister said: “We are aware of this incident in Leon, Mexico, which is currently being investigated by our head quarters in Germany. Fortunately, all of those who required medical attention are out of danger and recovering.
"We are liaising with the responsible distributor in Mexico who is working with the event organisers and the investigating authorities to understand the full circumstances surrounding the events last Saturday night.
"We fully support responsible drinking and adhere to the guidelines within each market in which we operate.”