Transcript for Prosecution's Case Coming to Close in Pistorius Trial
But begin with the blade runner Oscar Pistorius and the high drama at the trial. We have seen him cry, get sick in court. But he could take the stand to give his version from the night when he shot and killed his girlfriend. Matt Gutman has more. Reporter: It was a stunning admission -- Which forced you then to re-examine -- Reporter: With the gallery numb murmering that the case was coming to a close. We foresee more witnesses. Reporter: Oscar Pistorius is charged with the premeditated murder of his girlfriend, model reeva steenkamp. He says he thought this was an intruder. And the cell phone could prove crucial. They are expected to call a cell phone forensics expert who could provide a motive, something the prosecution has yet to reveal. Spending the last week trying to prove he was a loose cannon who always carried a gun. They showed a photo of an armed Pistorius. He had a love for them. Reporter: Witnesses suggesting they had an argument. Which could explain her standing behind the locked bathroom door and trying to protect herself as three more bullets blasted in. We are going to ask the defensive position. It's like this position. Reporter: Court sources tell us the prosecution could wrap the case by Tuesday. Which means the blade runner could take the stand as early as Wednesday. It will be the first time we hear him tell his version much events in court. Dan. Thanks, Matt. And we will continue to cover this story on "Gma." Now switch gears to an entertainment story.
This transcript has been automatically generated and may not be 100% accurate.