This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

Please enable Javascript to watch this video

A St. Louis man says a box that had been in his mother's freezer for decades contained the mummified remains of a newborn baby, which he discovered while cleaning out her home after she died.

Adam Smith told St. Louis media outlets that he opened the cardboard box Sunday expecting to find something like the top of his mother's first wedding cake or money because she never had a bank account. Instead, he says he found an infant's body and a pink blanket.

“There was a pink blanket—baby blanket—and when I reached down and touched it, I could feel a foot,” Smith told KTLA sister station KTVI in St. Louis. “I could see the baby’s head with hair. The hair was still attached.”

St. Louis police confirmed that they are investigating a "suspicious death" involving an "unknown infant" found inside the home and that autopsy results were pending. However, police would not answer questions Tuesday beyond an incident summary released Monday. That summary said that police were called to the home just before 1 a.m. on Sunday and did not say where in the home the remains were found.

Smith said police questioned him for two hours and that he provided investigators with a DNA sample.

“I have to wait for the autopsy to see if that baby ever took a breath and I cannot help it to think she might have done something to it,” he told KTVI. “I just can’t help it.”

Smith said his mother took the box with her as she moved to four different apartments in St. Louis but that she wouldn't answer her children's questions about it. He said he remembers asking his mother when he was 7 or 8 years old why she seemed sad.

"All I can remember is that she told me, 'My oldest child would have been 21 today,'" he recalled. "And that her name was 'Jennifer.'"

His mother died from lung cancer on July 21 at the age of 68.

"Even as she was on her deathbed, she never told me what was in that box," he said. "That's what makes me think maybe she did something to this baby and didn't want to tell anyone because she was afraid she would get in trouble."

He told KTVI he’s distraught over the possibility of what his mother may have done and has so many questions.

“Who absolutely keeps their own child in a box for this long and never talks about it?” Smith said. “I just have so many thoughts and it’s just insane.”