"Her friend Jessica Adams called 911 Saturday at 2:51 p.m.," said Deanna Boone, interim deputy public information officer for the town of Cary who said she did not know why Cooper's husband was not the one to report her missing.
After more than two days of searching, a local man walking his dog reported seeing a body on the banks of a storm water retention pond within miles of Cooper's home.
Late Tuesday evening, authorities confirmed that the body was in fact that of Nancy Cooper, and declared the case a homicide investigation.
ABCNews.com could not reach Brad Cooper, who works at the networking company Cisco Systems, but he spoke to a reporter from North Carolina's News & Observer Tuesday before his wife's body was found.
Admitting that he and his wife were having "marital problems," the husband told the paper that he didn't believe the situation to be so bad that his wife would leave him.
Authorities declined to comment on local reports that a surveillance video exists in which Brad Cooper is allegedly shown purchasing bleach the night before Cooper's disappearance.
"We cannot confirm or deny whether he was at the store and whether he did purchase bleach or any kind of cleaning products the morning of her disappearance," said Bazemore.