Three people attending Belsonic on Thursday night had to be rescued from the water after climbing over the railings.
Belfast Community Rescue service say they rescued three people attending the Gerry Cinnamon gig after they climbed the railings at the Ormeau Embankment and slipped into the water.
Issuing an urgent plea to anyone attending the outdoor festival over the coming week, the Community Rescue Service say they want people to enjoy the concerts 'without needing medical treatment that can be easily avoided'.
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Posting a statement on social media a spokesperson said: "Over the next number of weeks our volunteers will be on and around the river Lagan providing river safety cover during the Belsonic concerts at Ormeau Park.
"We strongly ask and advise those attending the concerts not to climb over the railings along the Ormeau Embankment as there is a steep, extremely slippery river bank on the opposite side of the railings.
"During yesterday evening's concert, 3 persons had to be extracted from the river after climbing over the railings along Ormeau Embankment and slipping into the river.
"We want everyone to enjoy the concerts and not to be needing medical treatment that can be easily avoided."
The Service also issued some helpful advice to anyone attending gigs across the city in the summer months.
They added: "If you are attending any of the concerts over the Summer months please consider the following 5 things:
• How are you getting home?
• Have you got ID with you?
• Bring a fully charged phone or note down important phone numbers.
• People can get lost in large crowds - as soon as you enter the venue, choose a spot where you and your friends can meet again if you get separated.
• Drink plenty of water.
"The Community Rescue Service - helping keep our communities safe!"
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