BUCKSPORT, S.C. (WBTW) – The Horry County coroner said all four people involved in a shooting early Saturday morning have now died.

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Lt. Raul Denis says Horry County Police Department officers responded to a home on Martin Luther Drive in Bucksport around midnight for a possible murder-suicide. When they arrived, officers found multiple victims including a man and a woman as well as two children, a 2-year-old and a 10-month-old.

The woman, the man and the 10-month old child were pronounced dead at the scene. Their cause of death is still under investigation.

Chief Deputy Coroner Tamara Willard identified the victims as 51-year-old Keith Davis, 40-year-old Kristina Burroughs, and 10-month-old Justice Burroughs, the niece of Kristina Burroughs.

A 2-year-old girl, identified as Katylin Bellamy, was taken to the hospital but died from her injuries at the Medical University of South Carolina Sunday afternoon.

Horry County police are still investigating the crime.CBS North Carolina contributed to this story.