When questioned by authorities Sarah and Kris Everson admitted to falsely claiming that they were parents of six newborns and had received donations for their family.
Authorities said that the Eversons expressed no remorse when they confessed to the hoax. They could face criminal charges for collecting cash and other gifts.
Police are now investigating a bank fund set up to take donations for their children.
Kansas City police chief Aaron Ambrose said Wednesday detectives were also looking at a post office box established to receive mailed gifts and an online PayPal account that allowed visitors to the couple's website to give money.
“We want to make sure it's a thorough investigation and all of our areas are covered," Mr Ambrose said.
The births were said to have happened in March.
The Eversons' story was printed Monday on the front of The Examiner in Independence with a photograph of the couple holding six one-piece baby outfits.
Sarah Everson, 45, allowed a reporter into her home, showing off the tiny nursery ready for her four boys and two girls, awaiting their discharge from intensive care.
She told of the surgeries two of the babies would undergo, detailed her discomfort during her pregnancy and even showed photographs of her baring her pregnant-looking midsection.
"I want to be with them all the time," she said, breaking into tears. "I don't like being away from them."
Authorities said the woman and her 33-year-old husband were questioned yesterday by police and came clean. Messages left on Sarah Everson's mobile phone today went unreturned.
Examiner Editor Dale Brendel said he was considering a front-page column to readers addressing the issue. He said the incident would force a review of his reporters' verification practices.