Suspect Conrado Juarez was due in a Manhattan court Thursday. The cold case heated up just this summer.
The indictment hadn't been filed in court as of Wednesday. Defense lawyer Michael Croce (CROH-chee) said he hadn't yet seen it.
Juarez was initially arraigned on a murder charge after his Oct. 12 arrest.
The girl's body was found in a cooler by a highway in 1991. Detectives nicknamed her "Baby Hope." A tip recently led them to her name, Anjelica Castillo.
Juarez was her cousin.
Police say he confessed to sexually abusing and suffocating Anjelica. He told newspapers she died accidentally.
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