• McCowan gets emotional at the stand.

UPDATE: LANSING - The closing arguments in the murder trial took place this morning. Jurors are expected to begin their deliberations at 1:30 p.m. and will decide whether McCowan is guilty of first-degree murder, second-degree murder, voluntary manslaughter or if he acted in self defense.

ORIGINAL STORY: LANSING - Prosecuting Attorney John Dewane took every opportunity to shake up McCowan in the court room that he possibly could, which caused McCowan to break down more than once.

Dewane even went as far as to dangle the knife McCowan used to kill Andrew Singler right near his face.

"You tell me you don't know a knife can kill somebody?" Dewane said.

Along with the knife, Dewane brought up a tweet McCowan sent out the morning of the incident that said, "This time of the night are when phone calls and texts are regretted in the morning."

"Yes, I remember tweeting that," McCowan said.

Dewane also called McCowan out for initiating the threats through his messages, which all led up to the fatal fight.

"Then you agree wth me, before you threatened Andrew he never threatened you at all in these texts," Dewane said. "There's not one threatening text to you, is there?"

McCowan said he drove to Singler's apartment in hopes of making up. But he didn't know what would happen, so he grabbed his pocket knife out of his middle console. McCowan said Singler repeatedly threw punches at him, which forced him to pull out his knife.

"You couldn't push him off? Couldn't run down the stairs?" Dewane asked.

"I didn't have any time" McCowan said. "It happened so fast."

Dewane also showed a video, where McCowan replied with a quick "OK," after he was told by police he had been arrested for homicide. In addition to the video, Dewane played the phone call between McCowan and his mother, where she told him Singler passed on. McCowan said it may not have appeared so on the phone call, but he was both devastated and in shock.