Prosecutors hope to play several previous calls George Zimmerman made to police prior to the night he shot and killed Martin.
(NBC News) Day two of the George Zimmerman murder trial is underway in Sanford, Florida.
The former neighborhood watch volunteer has told police he killed 17-year-old Trayvon Martin in self defense.
The prosecution argues five calls Zimmerman made to police prior to the night Martin died point to a man growing increasingly frustrated.
They're urging Judge Debra Nelson to allow the calls to be played for the jury.
"It ought to be admitted because it shows the context in which the defendant actually sought out his encounter with Trayvon Martin on the night of February 26th, 2012," argued prosecutor Richard Mantei.
The defense is asking Judge Nelson to block the calls, one of which was already played in court yesterday.
"It has to be relevant to the client's state of mind at the time of the event. Nothing of this evidence suggests at all how my client acted at the time of this event," argued defense attorney Mark O'Mara.
Judge Nelson said she would further review the calls at the end of the day and told the prosecution to resume its case.