Miller was charged with murder, child molesting and confinement , WXIN reported.
The alleged killer wrote a note on a barn door in 1990, that said, “I kill 8-year-old April Marie Tinsley. I will kill again."
In 2004, the man allegedly left threatening notes, photos and used condoms on three girls' bicycles. DNA in the condoms matched what was found on April's body, the Star reported.
"Hi honey. I been watching you," said one note, which was released by the FBI. "I am the same person that kidnapped, raped and killed April Tinsely. You are my next victim."
In May, a detective arranged for DNA testing at a laboratory. On July 6, the DNA sample was narrowed to two brothers, one of whom was Miller, the Star reported.
While checking Miller's trash on July 6, investigators found three used condoms, the newspaper reported. Three days later, results from DNA testing matched the used condoms found in Miller's trash to the condoms found in 2004 and DNA found on April, the Star said.
The arrest was made hours before Investigation Discovery's "On the Case with Paula Zahn" was scheduled to air an episode about the case.