ORLANDO, Fla. -- The former neighborhood watch volunteer who killed Trayvon Martin told his wife to buy bulletproof vests for them and for his attorney, according to recordings of jailhouse calls released yesterday.

"As uncomfortable as it is, I want you wearing one," George Zimmerman told Shellie Zimmerman. He had a vest on when he left jail after posting bond. His attorney, Mark O'Mara, has reported receiving threats.

The calls, released by prosecutors, detail how Zimmerman told his wife to transfer money from bank accounts and could play a crucial role in his second bond hearing next week.

Zimmerman, 28, was released on $150,000 bond in April, several days after the calls took place. At his bond hearing, his wife testified that she didn't know how much money had been raised from a website created for his legal defense. She also testified that they had limited funds because she was in nursing school full time and Zimmerman wasn't working.

Prosecutors say the calls show the couple knew that about $135,000 had been raised by the website. The judge revoked the bond and ruled the couple had deceived the court. Zimmerman has been back in jail for almost a month.

Shellie Zimmerman, 25, was arrested last week on a perjury charge and posted bond. The third-degree felony is punishable by up to five years in prison and a $5,000 fine.

Her husband is charged with second-degree murder and has pleaded not guilty, claiming self-defense during the confrontation with the Martin, 17, in a gated community in Sanford.

In one recorded call, Zimmerman tells his wife and sister how to change a computer password at a credit union so they can move funds around.

In another, Shellie Zimmerman said money raised from the website was also being used to pay bills. They also talked about how they would whisk Zimmerman away from the jail once he was released in April, possibly using a rental cars to throw off anybody who tried to follow.

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