Trayvon Martin Case: Zimmerman's defense team deposes victim's girlfriend and family, report says

(CBS) SANFORD, Fla. - George Zimmerman's defense team has deposed Trayvon Martin's girlfriend, father, mother and brother, case records say, according to the Orlando-Sentinel. 

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According to the paper, Mark O'Mara, the lead defense attorney for the former neighborhood watch leader accused of fatally shooting Florida teen Trayvon Martin, took the sworn account of the victim's girlfriend last week.

The girlfriend is considered a crucial witness in the trial because she was reportedly on the phone with Trayvon shortly before he was shot by Zimmerman.

The 29-year-old Zimmerman is scheduled to go on trial in June on charges of second-degree murder. He has pleaded not guilty, claiming he acted in self-defense when he shot the 17-year-old in February 2012.

It is unclear exactly what Trayvon's girlfriend told Zimmerman's attorneys when they spoke with her last week at a Miami office of the Florida Department of Law Enforcement, but according to the paper, O'Mara was expected to challenge her on certain statements she has made in the past.

The girlfriend, who was 18 at the time of the shooting, initially told prosecutors that Trayvon described a man who was following him and scaring him when she spoke to him over the phone on the night of the shooting. She also reportedly told Benjamin Crump, an attorney for Travyon's family, that she heard Trayvon and the man exchange words that night before the phone call disconnected.

According to the Orlando-Sentinel, the defense team may be trying to attack the girlfriend's credibility because she allegedly gave false statements about her age and why she did not attend Trayvon's funeral.

Trayvon's father, mother, brother and three other witnesses were also deposed by the defense last week, the paper reports.

Complete coverage of the Trayvon Martin case on CBS News