As the BoomBox recently reported, Sean Kingston has been involved in a serious jet ski crash that resulted in the star's hospitalization. The 21-year-old 'Beautiful Girls' singer, who was in critical condition following the accident but is now stable at a Miami Beach hospital.

Now according to TMZ, Kingston's longtime friend and passenger on the jet ski, Cassandra Sanchez, is speaking out about the incident. "Both jet skis pulled out of the dock at the same time and we were going so fast we just blasted past them," Sanchez tells TMZ. "When we turned a corner and crashed ... they were so far behind us they didn't even see us crash."

Sanchez had gone to Miami Beach with a female friend on Saturday evening (May 28) to ride the waves with Kingston and a male friend of his. The pair were going "REALLY fast" toward a bridge that, according to Sanchez, had too low of a clearance for the jet-ski to go under. "We can't fit under there! Are we going to try and go under there? Sean stop!" Sanchez screamed out.

Sanchez believes that Kingston tried to avoid the bridge at the last second, but it was too little too late. "[Sean] was coughing up blood, foam and pink stuff" continued Sanchez after which Kingston kept saying "I'm hurting. I'm hurting." Sanchez says that she is alright with residual rib and jaw pain. She also tells of Kingston's overall condition stating that doctors plan to keep the singer in hospital for "a couple more weeks."

"They have a tube down his throat so he can't really talk, but he is lucid and understands what's going on," said Kingston's friend.

Watch Sean Kingston's 'Party All Night (Sleep All Day)'