This past weekend Sean Kingston crashed his het ski into a bridge and remains in critical condition in the hospital.

The co-passenger of the jet ski, Cassandra Sanchez, said that Kingston was driving really fast before the accident and that she begged him to slow down.

Sanchez, who is a longtime friend of Kingston's, told TMZ that she was riding with the singer, while their two friends were on another jet ski.

Both jet skis pulled out of the dock at the same time and we were going so fast we just blasted past them, Sanchez said. When we turned a corner and crashed ... they were so far behind us they didn't even see us crash.

Sanchez also added that she asked Kingston to reduce the speed of the jet ski.

We can't fit under there! Are we going to try and go under there? Seans top! she told TMZ she said to Kingston.

While there are no official details of what caused the crash, Sanchez said it was because Kingston was going too fast and lost control.

Sean was coughin up blood, foam and pink stuff, Sanchez said.

According to Sanchez, Kingston will remain in the 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, she said.