A 2-year-old Missouri boy is dead after being left alone in a room with the heat blasting for nearly 2 days.

Lucas Barnes, 25, and Kathleen Peacock, 22, are accused of neglecting their toddler Braydon Barnes for 38 hours in their St. Charles home on the outskirts of St. Louis over the weekend.

The couple had put Braydon in his crib Friday night. They did not return to check on him until Sunday morning.

He was left without food, the door shut and a space heater turned to the highest setting.

Peacock and Barnes called 911 after returning to the little boy, but due to undernourishment and hyperthermia caused from extreme heat, he was dead, NBC 5 affiliate KSDK reports. [[363373531, C]]

St. Louis County prosecutors said Tuesday the couple confessed that they had been making and using methamphetamine in the home during that time, according to NBC News. Police said officers found meth making materials in a trash can outside of the residence.

The parents were behind bars Wednesday on felony child abuse and drug charges.

Peacock is currently pregnant with another child, according to prosecutors.