George Zimmerman, the man charged in the killing of unarmed, black teenager Trayvon Martin, has returned to police custody in Florida, his defense team said Sunday. 

Zimmerman's defense team made the announce in a tweet, two days after a judge ordered him back to jail. 

Circuit Judge Kenneth Lester revoked Zimmerman's $150,000 bond, saying he had misled the court about the state of his finances. Zimmerman had said he and his wife had little money, but prosecutors said he had raised some $135,000 through a website set up to take contributions for his defense.

Zimmerman's legal team said Sunday that they will ask for a new bond hearing to address those concerns, and that they hope Zimmerman's voluntary surrender will show he is not a flight risk. Furthermore, the money Zimmerman has raised is in an independent trust and cannot be directly accessed by Zimmerman or his attorneys, according to the press release.

The bond issue could raise questions about Zimmerman's credibility in a case that hinges on jurors believing his account of what happened the night the 17-year-old was killed, legal experts say. 

Problems with Zimmerman's credibility may also complicate how his defense presents him as a witness, according to Orlando-area attorney Randy McClean, who is a former prosecutor.

"The other key witness, unfortunately, is deceased," McClean said. "Basically, Zimmerman is going to be asking the jury to believe his version of the facts. ... As the case stands now, his credibility is absolutely critical to the case."

Zimmerman has pleaded not guilty to second-degree murder for the February shooting. The neighborhood watch volunteer says he shot Martin in self-defense because the unarmed 17-year-old was beating him up after confronting Zimmerman about following him in a gated community outside Orlando.

Zimmerman wasn't charged in the case until more than a month after the shooting, saying he shot Martin in self-defense under Florida's so-called stand your ground law. Protests were held across the nation, and the case spurred debate about race. Martin was black; Zimmerman's father is a white non-Hispanic and his mother is from Peru.

Based on reporting by the Associated Press.

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