SANFORD, Fla. Ė A judge says George Zimmerman can be released on $150,000 bail as he awaits trial for the shooting death of Trayvon Martin.

The judge says there is a possibility Zimmerman will be allowed to go out of state because of worries about his safety, but details need to be worked out among the attorneys and law enforcement.

Circuit Judge Kenneth Lester says Zimmerman cannot have any firearms, drink alcohol or use drugs and must observe a curfew. Zimmerman will also have to wear an electronic monitoring device. The judge says Zimmerman will not be released Friday.

Zimmerman apologized to Martinís parents during the hearing, saying he didnít know the 17-year-old Martin was unarmed.

Zimmerman is charged with second-degree murder. He claims self-defense.