Trayvon Martin Update: Judge again denies Zimmerman defense request to depose lawyer for Martin's family

(AP) ORLANDO, Fla. - For a second time, a judge has denied a request by George Zimmerman's attorney to depose a lawyer for the family of Trayvon Martin, the Florida teen fatally shot by Zimmerman.

PICTURES: George Zimmerman faces murder charge

Circuit Judge Debra Nelson issued the denial on Thursday.

Zimmerman's attorney, Mark O'Mara, wanted to depose Ben Crump, claiming he could provide testimony that shows a key witness for prosecutors had lied.

Crump interviewed the teen known as "Witness 8" shortly after Martin's shooting death in February 2012.

Prosecutors say Witness 8 was on the phone with Martin moments before he died.

Martin was fatally shot by Zimmerman during a confrontation at a gated community in Sanford, an Orlando suburb. Zimmerman is pleading not guilty to second-degree murder, claiming self-defense. His trial is set for June.

A month-and-a-half lag between the shooting and Zimmerman's arrest led to nationwide protests.

Complete coverage of the Trayvon Martin case on CBS News