Authorities in Hollywood, Florida, say a young couple suffocated their three-week-old son, then tried to disguise what happened by staging the scene to look like a sudden, unexplained sleep-related death.

Crystal Garcia, 21, and her partner, 25-year-old Anfernee Watts, are charged with aggravated manslaughter of a child in connection with the death of their infant son inside the family’s home. They also face counts of child neglect with great bodily harm, tampering with physical evidence, failure to report a death to the medical examiner and knowingly providing false information to investigators.

According to an arrest affidavit cited by investigators, emergency crews were called to the residence after Garcia reported finding the baby unresponsive in a playpen. She allegedly told officers she had fed, cleaned and changed the child before placing him down and taking a nap, claiming she discovered something was wrong only after waking and briefly speaking with her mother elsewhere in the home.

Detectives say Garcia admitted she touched the infant’s eye to see if he would respond, but did not immediately call 911 or alert anyone in the house, later telling police she did not want to “stress” her mother. Watts, meanwhile, initially insisted he had left early that morning for a job interview, a statement investigators say was false.

Medical findings ultimately contradicted the couple’s account. The baby’s death was ruled a homicide by suffocation. Investigators allege Garcia tightly wrapped the newborn in a blanket, strapped him into a car seat, secured a pacifier in his mouth, then placed the car seat in a bathtub, shut the bathroom door and played loud music to muffle his cries.

Police say that after realizing the child was unresponsive, Garcia did not seek help but instead joined Watts in staging the scene. The home appeared to have been recently scrubbed with bleach and wipes, with items moved or removed, according to the affidavit. Watts allegedly admitted discarding baby bottles and other objects, while surveillance footage reportedly shows Garcia carrying cleaning supplies and throwing away trash roughly half an hour before she called 911.

Detectives also noted a disposable changing pad with what appeared to be blood spots and a strong odor of bleach, which Watts tried to explain as the result of an accidental spill. Watts’s mother later told police that Garcia confessed to lying about what happened. Investigators say Garcia left voice messages for the department stating she had lied and wanted to admit she smothered the baby.

Both Garcia and Watts are being held in the Broward County Jail as they await trial.