Amber (left) and Jamie (inset) Waterman were arrested in connection with the disappearance of pregnant Ashley Bush, who was found dead with her fetus in another location (Pictures: McDonald County Sheriff Department)

A married woman allegedly kidnapped and killed pregnant mother to take her unborn child – and her husband admitted to helping cover up the horrific crime.

The married couple, Amber and Jamie Waterman, were arrested on Thursday in connection with the disappearance of 33-year-old Ashley Bush, who was 31 weeks pregnant when she was found dead with her fetus in another location.

Amber allegedly created a fake Facebook account under the name Lucy Barrows to lure Bush into meeting her about a job opening. But Amber really intended to steal Bush’s fetus, according to a federal criminal complaint obtained by 5NEWS.

Bush had complications during her fourth pregnancy and was told to take time off work, but she looked for a work-from-home position in a Facebook group for moms, her fiancé Josh Willis told the TV station.

Amber Waterman has been charged with kidnapping resulting in death (Picture: McDonald County Sheriff’s Department)

On October 28, Bush and Willis met ‘Lucy’ at a public library in Gravette, Arkansas, and were told that Bush would have to travel with the woman to meet the boss in Bentonville.

Three days later, Willis said he left Bush at a convenience store in Maysville and went to pick her up when she texted that she was back at 3pm. Willis said the lady driving Willis did not stop.

‘The driver looked at me and kept going,’ Willis told 5NEWS.

Willis trailed the vehicle going north on Highway 43 but eventually lost it. He said his calls and texts to Bush went unanswered, and that her phone was found in a ditch less than a mile away.

Jamie Waterman has been charged with one count of being an accessory to a fatal abduction (Picture: McDonald County Sheriff’s Department)

In addition, the company that ‘Lucy’ worked for said there was no employee there by that name.

Amber, meanwhile, told investigators that she ‘went into labor’ on Halloween, arrest documents state. She called 911 and told authorities she gave birth to a stillborn baby.

The baby was taken to a funeral home after emergency responders were not able to revive her, according to 5NEWS.

On November 1, the Watermans went to a funeral home saying they wanted to plan a memorial service for a baby the next day, county coroner BJ Goodwin told the TV station.

Ashley Bush, a mother of three, was found dead with her unborn baby in another location (Picture: Benton County Sheriff’s Office)

The morning of the scheduled service, a coroner called for a DNA swab from the baby. The couple were shocked when the coroner arrived to take the baby for an autopsy.

Jamie ‘got up and ran out of the funeral home’, Goodwin told 5NEWS.

‘Hands down craziest things I have ever dealt with as a coroner for 16 years,’ Goodwin added.

Jamie then told investigators that Amber confessed to killing Bush and that her body lay facedown next to a boat near their home. Amber allegedly took a ring off Bush’s finger and Jamie helped take the body to a fire pit where the couple set it on fire and then dumped it not too far away.

‘They got cleaned up after burning and disposing her body and showed up for a funeral,’ Goodwin said.

Amber has been charged with kidnapping resulting in death. Jamie has been charged with one count of being an accessory to a fatal abduction.

Willis, who is the father of Bush’s children aged 2, 7 and 8, said he was ‘disgusted in the whole situation’.

‘I wish that Ashley and Valkyrie were alive and home with us all,’ he said of his fiancé and their unborn baby.

‘I can’t believe that there are people out there that would do something like this.’

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A married couple were arrested in connection with the disappearance of a pregnant woman found dead with her fetus in another location.