The Tyrannosaurus male did it. Later in the movie one of the crew members tells to Sarah and Ian what happend. During the transport he was about to die, because of the anaesthesia. The crew gave him an antidode to save his life. When the T. rex woke up it killed the crew.
*Truth: Raptors. There was suppose to be a scene that was written but never filmed showing Raptors on the ship. They attacked everyone and when T-Rex woke up she killed the Raptors. (so it says). Plot holes.