MUNCIE, Ind. -- A mother and her fiancée said in jailhouse interviews Monday night that they don't know how her 11-month-old boy might have consumed alcohol, which led to their arrests.

Investigators said the boy, Korbin, drank enough alcohol to become legally drunk, 6News' Tanya Spencer reported.

The baby's mother, Amanda Elbert (pictured, left), 19, and her fiancée, Edward Williams (pictured, right), 29, were at an apartment when the boy drank alcohol, according to police. Williams told police he was drinking beer and a friend of his was drinking whiskey, but that no one saw the boy ingest alcohol.

The child's father picked him up at the apartment and noticed that he was unresponsive, authorities said. He brought the boy to Anderson Community Hospital, where doctors tested his blood.

Authorities said the boy's blood-alcohol level was 0.118 percent, above the legal limit to drive, which is 0.08 percent.

Elbert said she has never done anything to hurt her child.

"I've had my baby for 11 months and he's never even fallen and gotten a bruise," Elbert said. "I'm very protective of my son. He's never been sick, never been to the hospital."

Williams disputed that the child had consumed alcohol at the apartment.

"I hate what happened to the baby and I hate the situation that I'm in," Williams said. "I'm telling the truth. The baby didn't leave with no alcohol in the system like that. The baby was fine, walking, pretty little baby. Everybody loved him."

The boy is staying with his father while his ex-wife, now pregnant with her second child, and her fiancée sit in jail.

The two will face a judge on neglect charges on Tuesday.