Miller, 36, is accused in the shooting death of Steve Thomas, 16, at a Harvey, La., nightclub on Jan. 12, 2002. The teen used a fake ID to get into the club.
Although Miller changed nicknames from "C-Murder" to "C-Miller" after he was charged with murder, the byline for his new novel, "Death Around the Corner," is "Corey Miller a.k.a. C-Murder."
Sassone said she had approved trips that Miller made in July to New York and last week to Mississippi.
Yesterday's hearing was called to discuss a drug test Miller supposedly failed before going to Mississippi to promote his book. But the test, administered by a home incarceration officer, wrongly concluded that Miller had methamphetamine in his urine, officials said.
Follow-up testing in a laboratory confirmed the false positive test result could have been caused by cold medicine that Miller took, Assistant District Attorney Roger Jordan said in court.