A woman who admitted her role in a scam that raised US$400,000 ($639,000) using a fake story about a homeless man received a one-year prison sentence in federal court.

Katelyn McClure was also ordered to make restitution and serve three years of supervised release. The 32-year-old Bordentown, New Jersey, resident will be sentenced on state charges next month and could receive more prison time.

A message was left with a lawyer representing McClure.

McClure and her then-boyfriend, Mark D'Amico, fabricated the story about homeless veteran Johnny Bobbitt Jr giving McClure US$20 when she ran out of petrol on a Philadelphia highway in 2017.

Johnny Bobbitt (left) sued Mark D Amico and Katelyn McClure, saying he wasn t getting the money raised on his behalf. Photo / AP

In truth, state and federal prosecutors said, the group had met near a Philadelphia casino in October 2017 shortly before they told their story.

They publicised the story through local and national media interviews and created a GoFundMe account that more than 14,000 people donated to, thinking the money was to help Bobbitt, according to prosecutors. Law enforcement began investigating after Bobbitt sued the couple, accusing them of not giving him the money.

The federal criminal complaint alleged all of the money raised in the campaign was spent by March 2018, with large chunks spent by McClure and D'Amico on a recreational vehicle, a BMW and trips to casinos in Las Vegas and New Jersey.

Kate McClure with Johnny Bobbitt Jr after he gave her his last US$20. Photo / AP

D'Amico, described as the group's ringleader, pleaded guilty to federal charges and was sentenced in April to 27 months in prison. He was also ordered to make restitution and will be sentenced on separate state charges next month.

Bobbitt was sentenced to five years' probation on state charges in 2019 and faces sentencing next month on federal charges.