"We have many answers, but unfortunately we don't have all of them at this point", Prince George's County Police Captain Anthony Schartner said during a press conference.
When she returned home on Friday morning she found the girls in a basement room with apparent stab wounds, the fourth girl (2) was unharmed in the incident.
'This is one of the the most hard scenes that our officers arrived on, ' Donelan said, adding that the neighborhood where the children were found was quiet.
Williams has been charged with three counts of first and second-degree murder and other related charges.
Donelan said that a family member arrived home to find the three girls murdered.
Kelley called the police who pronounced them dead at the scene.
Additional details regarding the investigation were not released by police.
Police are trying to determine what exactly happened inside of the home and say there is no threat to the community.
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Police did say they are interviewing the family members at this time.
Antonio Williams, 24, was arrested in connection with the murder of the three girls.
Prince George's County Police have announced an arrest in the killing of three girls whose bodies were found at a home in Clinton.
The victims had suffered from trauma to the body, Donelan said. While talking to investigators, police said Williams admitted to stabbing the three girls.
"We have various individuals that we are conversing with and are proceeding to address", Donelan said.
"This is one of the most hard scenes that our officers arrived on".
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