SANFORD, Fla. — Attorneys in the George Zimmerman trial are expected to make arguments outside of the presence of the jury on Wednesday.

The judge will decide if evidence about a college criminal justice course Zimmerman previously took should be admitted into evidence. It did include course work on Florida's self-defense law.

On Tuesday, the lead investigator in the case was back on the witness stand.

He recounted the story Zimmerman told him about his confrontation with Trayvon Martin in February 2012.

Defense attorneys say the witnesses so far have supported their argument of self defense.

"I think most of the witnesses that we've talked to have told the truth," said Zimmerman attorney Mark O'Mara. "And if they're telling a truth that's favorable to the defense, so be it."

Zimmerman, a former neighborhood watch captain, is charged with second degree murder in Martin's shooting death.