Ocean City, Md. ? Police with cadaver-sniffing dogs, shovels and a backhoe dug Monday outside the home of a woman charged with killing her baby boy, widening a grim search that has turned up four tiny sets of remains.

None of the remains appeared to be those of full-term babies, police said, including those of the most newly delivered infant, a boy, who was found in a vanity below the bathroom sink in Christy Freeman’s home.

Two trash bags containing separate sets of human bones were found in a trunk in her bedroom, and another set of remains was found in a bag in a small recreational vehicle parked in her driveway. All four were believed to be from fetuses Freeman carried, police said.

Police kept searching in the scrubby, overgrown yard outside Freeman’s house after the cadaver dogs hit on new possible scents.

“I want to clear my name in this case,” Freeman, 37, told a judge at a bond hearing Monday when she was ordered held without bail on first-degree murder and other charges in the most recent death. “If you offer me a bond, I’m not going to leave. … I’m going to be here. I’m going to help clear this situation up.”

Soon after the hearing, police said the chief medical examiner’s preliminary report found that the baby boy was stillborn, but the cause of death was still under investigation. Police spokesman Barry Neeb said it was possible the charges against Freeman could be amended as a result.

Freeman, who has four other children, came to authorities’ attention Thursday when emergency medical technicians and police were called to her apartment on the second floor of a small, rundown white house behind a 7-Eleven.

Her boyfriend, Raymond W. Godman Jr., said that Freeman had passed out in the bathroom and that he carried her to the sofa, according to the charging documents. She was lying down and bleeding heavily, and had a garbage bag and towels under her.

She initially denied having been pregnant even after she was taken to a hospital Thursday and doctors discovered a placenta and part of an umbilical cord, police said. She eventually told police she had delivered a dead and deformed baby – claiming that she did not see any hands or feet – and that she had flushed the body down the toilet, according to charging documents.

Police got a search warrant and found the infant wrapped in a white towel with a blue stripe in the cabinet below the bathroom sink, according to the charging documents, in which authorities describe the baby as a “viable fetus/infant,” with hands, feet and facial features.

Police found the two sets of remains and a placenta in the bedroom trunk Thursday, and a plastic bag with the fourth infant’s corpse Friday in the motor home.