A 26-year-old man is due to appear in court charged with murdering pregnant teenager Nikitta Grender in Newport.
Carl Whant will also face a charge of child destruction when he appears before Caerphilly magistrates.
He was arrested on Wednesday and charged late on Saturday night.
Ms Grender, 19, who was two weeks away from giving birth, was found dead in her burning flat in Liswerry in the city on 5 February.
The unborn girl was named Kelsey-May by her family, who are said to be receiving support by Gwent Police.