Miami, FL - The heroic rescuers who came to Sean Kingston aid following his jet ski crash yesterday have described how they discovered the singer vomiting blood and almost drowning.  Kingston is in stable but critical condition at Jackson Memorial Hospital

Jonathan Rivera, who by chance was a member of the Coast Guard, and friend Jimmy Vega were in a boat approaching Palm Island Bridge in Miami where they witnessed the aftermath of the accident.

They quickly jumped into the water where they found Kingston 'extremely dazed' and 'coughing up blood'.

Kingston rose to fame with his 2007 hit Beautiful Girls and was also featured on songs by artists including Justin Bieber. His self-titled debut album sold over 1 million copies worldwide.

On Twitter, Bieber posted a message of support for Kingston.

'Got my friend Sean Kingston in my prayers tonight,' Bieber tweeted early Monday. 'A true friend and big bro. Please keep him in your prayers tonight as well.'

Rihanna tweeted: 'Sean we praying for u baby.'

Rap star LL Cool J wrote: 'I hope and pray that Sean Kingston recovers quickly…. #staystrong.'

And female rapper Nicki Minaj, who worked with Kingston on the current single Letting Go (Dutty Love) wrote on her Twitter page: 'My love & prayers are with Sean Kingston & his family.'

Reality TV star Audrina Patridge and singer Lucie Jones were also  among those posting messages of support.

On her Twitter page Jones wrote: 'Oh nooo :/ #seankingston xxx praying4u', while TV beauty Patridge added: 'pray for Sean Kingston who is critical after jet ski crash.'

Read more: http://www.dailymail.co.uk/tvshowbiz/article-1392516/Sean-Kingston-jet-ski-accident-Rescuers-recall-horror-crash.html#ixzz1NsLMI8w4