A man accused of killing a 4-year-old girl known for two decades only as Baby Hope was indicted Tuesday in Manhattan.
Conrado Juarez faces an unspecified charge.
Juarez was initially arraigned on a murder charge following his October 12 arrest.
Police say he confessed to sexually abusing and suffocating his cousin Anjelica Castillo.
In the days after his arrest he told reporters she died accidentally and he only helped dispose of her body.
Juarez's attorney told reporters outside court that he is not ruling out the possibility of a coerced confession.
"The only thing I will say about any statement that was allegedly made by Mr. Juarez is that I don't trust any statements that were made by any individual after being in custody for such an extended period of time. I think that all of those types of statements are suspect," said Attorney Michael Croce.
Back in 1991, the 4-year-old's body was found in a cooler alongside the Henry Hudson Parkway in Inwood.
A tip this summer led investigators to her identity and to Juarez' arrest.