George Zimmerman Trial Live Stream: Jury Hears Defendant's Account of Shooting (WATCH)

The lead police investigator from the Sanford Police, Chris Serino, finally took the stand in the George Zimmerman murder trial and he will continue to testify on Tuesday, according to the Orlando Sentinel.

Tuesday's court session led off with the prosecution filing a motion to strike an answer Serino had given the precious day. Under cross examination Serino was asked by defense attorney Mark O'Mara if he thought Zimmerman had been telling the truth in his statements to police, Serino said he believed that he was. Witnesses are banned from commenting on the credibility of other witnesses or the defendant and the jury was told to ignore Serino's answer, reports the Orlando Sentinel.

The bulk of Monday's court session was spent listening to recordings of Zimmerman's interviews with police after the shooting that ended in the death of 17-year-old Trayvon Martin. In an interview with Officer Doris Singleton Zimmerman seemed surprised that Martin was dead. Upon noticing a cross around Singleton's neck Zimmerman asked if she were Catholic, according to ABC News.

"In Catholic religion, it's always wrong to kill someone," Singleton said Zimmerman told her.

"If what you're telling me is true, I don't think that what God meant was that you couldn't save your own life," Singleton responded.

For the first time the jury was able to hear exactly what Zimmerman believes happened that night directly from the defendant himself.

"He jumped our form the bushes and said, 'what the f**k is your problem,'" Zimmerman told Singleton in the interview. "I said I don't have a problem and then he punched me in the nose. As soon as he punched me I fell backwards."

"He was whaling on my head and I started yelling 'Help,'" Zimmerman continued. "He grabbed my head and stated hitting me into the sidewalk. I slid into the grass to get out from under him. I was still yelling out for help."

At one point during Zimmerman's interview with Serino the policeman tells the defendant that his injuries are "not quite consistent" with the story he was telling, according to the Los Angeles Times.

Chris Serino will continue to face cross-examination when Tuesday's court session begins; the prosecution has yet to call the medical examiner that performed the autopsy or the parents of Martin.

To watch a live stream of all of the proceedings click here.