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Family handout

Authorities in North Carolina have charged a couple with the murder of a missing pregnant mother of two, whose body was found stuffed in a suitcase on Monday.

Brittany Samone Smith, 28, was reported missing on Feb. 5. She was last seen alive on February 4, according to the Wake County Sheriff's Office.

Her body was found stuffed inside a suitcase near the shoreline of the Neuse River, in Raleigh, according to a statement from the sheriff's office.

Her cause of death is strangulation. A motive for her murder was not disclosed.

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Wake County Sheriff's Office

Authorities arrested Thomas Clayton Johnson, 37, and Emmalei Grace Trevathan, 24, during a traffic stop in Wake County on Wednesday.

Investigators did not reveal the information that led them to the suspects.

Johnson and Trevathan are being held without bond on charges of murder, murder of an unborn child, and concealment of a body.