After a months-long investigation, Louisiana authorities have charged a 29-year-old woman in the death of her 9-month-old son.

Shreveport police said they responded to a call on May 2 about a baby suffering from blunt force injuries to his body. Harlem Joseph was taken to Ochsner LSU Health Shreveport, where he was pronounced dead.

On Saturday, police said, they took out a warrant for Sharon Johnson, charging her with second degree murder in the baby’s death.

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Johnson was already in the Caddo Parish Correctional Center, where she was being held after her May 9 arrest on a charge of second-degree cruelty to juveniles stemming from the beating of her two-year-old daughter.

She’s being held on a $25,000 bond for the cruelty charge and $500,000 for the murder charge, according to jail records.

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[Featured image: Sharon Johnson/Caddo Parish Sheriff’s Office]