A federal prosecutor has said that estranged husband from southeast Missouri has confessed to his father that he killed his wife.

The confession of the husband gave a new twist in the case of a missing Missouri mother of triplets.

Clay Waller admitted to his father in federal court on Thursday that he killed his 39-year-old wife, who had gone missing since June 1, and dumped her body in a hole, Assistant US Attorney Larry Ferrell said.

Jacque Waller is from southeast Missouri town of Cape Girardeau and is a mother of 5-year-old triplets. Clay Waller has not been charged in case of his missing wife, but he is facing federal charges for sending Internet threat to one of his wife's relatives.

Jacque was first reported missing after she visited her husband at his home on June 1 in Jackson to pick up her son. Jacque just attended a divorce hearing when she visited her husband's place at around 4:00pm.

Waller had been named a person of interest in the case, but the prosecutor's remarks in court Thursday were reportedly the first evidence made public that linked him to a crime, Fox News reported.

Jacque's blue Honda Pilot car was found abandoned along a state highway, three miles away from Waller's home. However, her purse, keys and cellphone were still missing.

It was just his bait to get her to the house, so he could kill her, Cheryl Brenneke, the woman's sister, told FoxNews.com in June.

Clay Waller told investigators that he and his wife both had an argument before she walked away mad, according to authorities.

Brenneke said that Waller had earlier threatened to kill his wife if she filed for divorce. He harassed her with repeated phone calls and text messages after she had moved out of the couple's home in March, Fox News reported.