Updated

A New York City couple who pleaded guilty to federal sex trafficking charges are facing new charges in a baby's death.

Brooklyn District Attorney Charles Hynes said Wednesday that Domingo Salazar and his wife, Norma Mendez, were indicted on charges including manslaughter and criminally negligent homicide.

The charges stem from the 2008 death of 3-month-old Carlos Santillana. Prosecutors say the couple failed to get the boy medical help after he was beaten.

The boy was Salazar's son with a teenage Mexican girl.

Prosecutors say the couple admitted they took the teenager from Mexico to Brooklyn and forced her into prostitution. They're awaiting sentencing on those charges.

Attorney information for the couple wasn't immediately available.