BEAVER, Utah (ABC4) – A Beaver man has been charged in the death of a 23-year-old infant who died last September.

Joshua Downey, 27, was charged Friday with one count of aggravated murder a first-degree felony, and one count of aggravated child abuse a second-degree felony.

On September 19, authorities were called for an infant not breathing in Beaver, about 104 miles north of St. George. Medical personnel arrived and took the baby to a nearby hospital, where the infant was pronounced dead at just 23 days old.

Investigators spoke with the child’s father and his fiance, later identified as 32-year-old Tawna Steed. According to the father, only he and Steed had been with the child except for “one or two times since the child was born.”

About a month later, an autopsy was conducted and showed the infant had multiple healing rib fractures, and at least two separate brain hemmorrhages — that occurred from shaking the baby or some other type of blunt force trauma, court records state.

The Beaver County Sheriff’s Office again spoke with the child’s father about the autopsy findings. In response, the arresting affidavit says he denied hurting or killing his child and “was very emotional at times, crying and putting his head into his hands.”

When investigators spoke with Steed, they say she also denied hurting or killing their child. Authorities noted in the arresting affidavit that Steed “never cried or became upset during the interview.” When Steed asked for an attorney, the Beaver County Sheriff’s Office placed her under arrest and booked her into jail on one count of aggravated murder.

Steed was charged on October 20, 2021, with aggravated murder. Her next court hearing is on August 4.

After speaking with Downey again, he told investigators he had seen Steed shake the child twice. The first time, he says he had heard the baby crying for a while and when he came into the apartment, she was sitting on the bed holding the infant in front of her.

Downey says Steed “was shaking the baby vigorously and grabbing it tightly across the chest with her two hands.” She was allegedly yelling at the infant, telling it to stop crying. Downey told investigators he took the infant away from her. He described the child as being stunned but “got better” when he took it outside.

The second time, Downey says he walked in and saw Steed shaking the child again. Again, he said he took the child and comforted it. After both times, he tells the Sheriff’s Office he took the child to his parents’ house.