PORTLAND, Ore. -- A pregnant woman found dead at a Beaverton-area home Friday was cut open and had her baby removed from her womb, sheriff's deputies said.

The baby did not survive and Washington County sheriff's deputies said they're now considering whether 28-year-old Korena Roberts tried to contact other pregnant women in the Portland metro area prior to the homicide.

Roberts is accused of killing 21-year-old Heather Snively, whose body was found in the crawlspace below the kitchen of Roberts' home.

Roberts' arrest stems from an incident Friday in which firefighters went to a home on Mill Creek Drive after a report of a newborn baby in distress.

When rescue crews arrived, Roberts' boyfriend was performing CPR on the baby at the direction of a 911 dispatcher and Roberts was also at the home with the child. Roberts told firefighters she had just delivered the baby and rescuers observed a large amount of blood in the house, deputies said. They decided to send the child and Roberts to the hospital.

At the hospital, doctors were not able to revive the baby and discovered Roberts had not delivered the child, said Sgt. David Thompson in a sheriff's office press release.

Deputies were called to the hospital and they soon went back to the Mill Creek Drive home, where they found Snively's body in the crawlspace, Thompson said.

Mom Says Victim Met Suspect Through Craigslist

It's unclear whether Snively died because of head wounds or as a result of the cutting injuries she received to her abdomen, Thompson said in a press release Monday.

The autopsy showed Snively's unborn son was removed from her womb after she had been cut open, sheriff's deputies said. More lab analysis and tests will be required before detectives can determine whether the infant died before or after he was removed from the womb.

Heidi Kidd, Snively's mother, said her daughter met Roberts via Craigslist, the classified ads Web site. She said the pair met to exchange baby clothes.

Snively's mother, Heidi Kidd, said her daughter was likely an easy target for Roberts since she was so trusting.

"The woman had told her that she was pregnant about eight months just like Heather. They befriended on another. Like I said, Heather trusted everybody," Kidd said. "She just saw the good in everybody. She was the type who would help out anybody if they needed it."

Deon Whitaker, who lives in the area, said she saw Snively in the neighborhood last week.

"I didn't know her name, but we just said, 'Hi,' and talked while we were playing ball with the kids," Whitaker said.

Detectives said Roberts may have had contact with numerous pregnant women in the Portland metro area prior to her arrest. Anyone who has had contact with her via the Internet or in person is asked to call the sheriff's office at 503-846-2700.

Neighbors Say Roberts Pretended To Be Pregnant

Neighbors who live in the area said Roberts told them she was expecting a child prior to the incident Friday.

"She had told my mother about a week ago that she was pregnant -- about to have a baby -- like seven or eight months pregnant," said neighbor Doug King. "She didn't appear to be pregnant to us. She had gained weight, but not a lot in the belly or anything like that."

Wendy Pursinger recently held a neighborhood yard sale. She said Roberts purchased a stroller from her.

"I had asked her then, 'What are you doing? Your kids are older,'" Pursinger said. "That's when she said she was pregnant and she was having another baby."

Pursinger worries Roberts had planned the killing for some time.

"It's sad that she set us all up," she said.

About six hours after Snively's body was found Friday, her boyfriend, who is also the father of the child, reported Snively missing. He told deputies that Snively, who recently moved from Maryland to the Tigard area, was in the third trimester of pregnancy. Deputies soon matched the missing person's report to the Mill Creek Drive homicide.

Kidd said her daughter grew up in West Virginia and recently moved to Tigard with her fiance. She said the couple was looking forward to becoming parents.

"They had just finished the baby's room and she was so ready to be a mom. She was always a little mother ever since she was little," Kidd said.

Still in shock, Kidd said she now calls her daughter's cell phone just to hear her voice.

"She's going to be sorely missed. I mean, she had such a good spirit, so kind-hearted, just loved life. She always had a glow," Kidd said.

Suspect Lived At Home With Boyfriend, 2 Kids

Neighbors said Roberts lived at the Mill Creek Drive home with her boyfriend and two small children, who weren't home at the time of the incident.

"I actually kind of liked (Roberts') little boy," said neighbor Terry King. "You know, you screwed up his life. You did something like that, I don't care what happens to you … but the kid; I do care about that."

Roberts' boyfriend is a witness and not a suspect in the case, Thompson said. Deputies said Roberts told many people, including her live-in boyfriend, that she was pregnant with twins.

Doug King said he only knew the couple casually.

"I didn't know him real well, but he seemed distracted," King said. "I helped him push his car into the driveway, actually, the day before yesterday."

The case is still under investigation.

Roberts, who has no criminal history, is being held at the Washington County Jail without bail. She will make her first court appearance Monday.

Deputies: Pregnant Victim Cut Open, Baby Taken