Following the tragic death of a man at this weekend's Rainbow Serpent Festival in Victoria, festival organisers have offered their condolences and stated, "The thoughts of all our staff and volunteers are with them during this extremely difficult time."

News Limited reports that paramedics were called around 10.15pm on Saturday night but the man was already dead, while Fairfax reports the man went into cardiac arrest.

An official cause of death has not been reported, however it is not being treated as suspicious by police.

In his statement, Rainbow Serpent director Tim Harvey said, "Rainbow Serpent considers the safety of patrons a priority and we will continue to cooperate with authorities to determine exactly what happened in this situation.

"We are an extremely close knit community and the effects of this tragedy will be felt right throughout our staff, volunteers and patrons for a long time to come."

The electronic music festival has been plagued with tragedy in the past, after Daniel Buccianti passed away at Rainbow Serpent in 2012. 

This year's event saw the likes of Simon Posford, Mathew Jonson, Guy J and more take to Lexton, Victoria for the four-day event.