Sanford, Fla. - Neighborhood watch volunteer George Zimmerman is back behind bars.

Zimmerman is accused of shooting and killing Florida teen Trayvon Martin.

Officials say Zimmerman failed to mention his website raised more than $200,000 for his defense.

Zimmerman is being held without bail. Zimmerman says he shot unarmed 17-year-old Martin in self-defense. Zimmerman must surrender; bond revokedProsecutors release cache of evidence in Trayvon Martin case