BALTIMORE (WJZ) — Police have arrested a 25-year-old in the homicides of three girls under the age of 10, who were found in a Prince George’s County home Friday morning.

Antonio Williams is charged with three counts of first and second-degree murder in the deaths of his sister, 6-year-old Nadira Withers, and two second cousins, 9-year-old Ariana Decree and 6-year-old Ajayah Decree.

VIDEO: Our Homicide Detectives escort 25 y/o triple homicide suspect Antonio Williams to Department of Corrections late Friday night. pic.twitter.com/ToM35IT03z — PGPDNEWS (@PGPDNews) August 19, 2017

Police say the Decree sisters were visiting from Newark, New Jersey, and a fourth child, a 2-year-old, was also in the home at the time of the killings.

Williams’ mother discovered the bodies inside the Clinton home off Brooke Jane Drive, just after 7:30 a.m. Friday, after getting home from work.

The three girls all had stab wounds, and were pronounced dead at the scene.

Williams had “sole custody” of the girls overnight Friday because his mother worked the night shift, and was arrested after police say he confessed to stabbing all three of the girls.

Neighbors were stunned.

“I can’t even imagine. Didn’t wake up this morning to think that there would be a triple homicide in my neighborhood,” James Pinkney said.

“It’s heartbreaking. I can’t imagine what the mother is going through,” Cherese Young said.

Police are still trying to determine his motive.

Police say Williams has no criminal history or history of mental illness.

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