Officers canvassed the neighborhood Monday and handed out fliers in hopes of talking to possible witnesses.
Police said a family member couldn't get in touch with her on Saturday, and a tenant, who usually checked on Barefoot, asked apartment management to call for help.
Monday authorities released the 911 call in the case.
- "I asked her if she called 911 and she said no. She wants us to take the key and go over there,but I called my manager and my manager doesn't want me doing that. She told me to call 911."
"This Joanne woman tells me this has happened before she didn't come to the door, she was out cold because she has diabetes or something and had to be taken to the hospital or something."
Authorities haven't said how Barefoot died, but they said her car was missing from the home.
"Right now it's a death investigation, but it is suspicious," Raleigh Police Det. Sgt. Kevin Carswell said. "Her car's missing and we're giving it the full resources of the police department."
Barefoot's car is described as a silver Ford Focus with the North Carolina plate RNY-5847.
Police did not say if anything else from the home was missing, but they did reveal she was last seen at work on Friday.
Eyewitness News has learned Barefoot worked at the Cameron Village Fresh Market.
"I'm just so sad to learn that something has happened to her, because I do shop here periodically and she was always very personable," Fresh Market customer Mary Anne Howard said.
Anyone with information about the case is asked to call the Raleigh Police Department's Detective Division at (919) 996-3555 or Raleigh CrimeStoppers at (919) 834-HELP. CrimeStoppers pays rewards for information that help solve cases.