Organisers of the Ultra Music Festival in Miami, Florida have banned minors from attending the controversial event.

The electronic dance festival was marred earlier this year (Mar14) when a 21 year old was found dead in a car and a security guard suffered brain damage as she was trampled by fans jumping a fence.

Police also reported a total of 84 arrests over the three-day event.

Miami Mayor Tomas Regalado's bid to cancel the festival fell apart in April (14) after city commissioners voted in favour of allowing the event to return to the Bayfront Park venue in 2015.

However, organisers have decided to take extra precautions for next year's (15) festival, announcing on Tuesday (02Sep14) that only revellers ages 18 and older may attend.

A statement from officials reads, "While we sincerely value the incredible ongoing support from our younger fans, we ultimately believe that Ultra Music Festival is a premium event geared towards adults.

"This decision has been made to reinforce and promote the safety of all Ultra Music Festival fans and to ensure the overall enjoyment of all future attendees."

The next festival will run from 27-29 March, 2015.