(CNN) -- Text messages sent from Trayvon Martin's cell phone the day he was killed show he had been arguing with someone on the phone and was "hostile," attorneys for George Zimmerman wrote in a recent court filing.
Zimmerman's lawyers argue the texts are relevant to the case, in which the unarmed teenager was fatally shot by the neighborhood watch volunteer during a confrontation in a Sanford, Florida, neighborhood in February 2012.
The texts speak to Martin's demeanor and emotional state, the Thursday filing said, and "may assist the jury in understanding why Trayvon Martin chose to hide then confront George Zimmerman rather than simply going home."
The filing said the texts were mostly with "Witness 8," and the messages showed Martin and the friend were "hostile and angry with each other at various points throughout the day."
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