HOUSTON -- A couple accused of keeping a baby in a motel freezer for a year were supposed to appear in court Tuesday but had their case rescheduled, KPRC Local 2 reported.

Crystal Sosa, 25, and Dezmond Dewayne Blake, 28, were arrested after police found the baby's body in a zipped-up duffel bag inside the freezer in a room at the InTown Suites, 3000 state South Highway 6, on Friday. They were charged with tampering with evidence.

Sosa told investigators that the baby, Devin, died of natural causes. The Harris County Medical Examiner's Office has not released the official cause of the boy's death.

According to a probable cause affidavit, Sosa makes her living as a prostitute. The affidavit also states that both Sosa and Blake are heavy drug users.

Sosa told police she came home and had a heated argument with Blake. During that argument, she noticed the baby was not reacting to the noise.

Sosa checked the baby, who was lying in a crib on his back with a bottle in his mouth. Sosa said he was dead.

Sosa said she wanted to call 911 but did not because, she said, both she and Blake were drug users, one child had already been removed from their custody, and because of her personal history with the police.

She said they wrapped the body in a blanket, put the corpse inside a gym bag, and put the bag in the freezer.

Sosa said she and Blake continued to use the freezer for ice and frozen food items, such as pizza.

Investigators said charges against the couple could be upgraded.

Bail has been set at $50,000 each. Officials have not said when the couple will appear in court next.