He turned 25 the day after the alleged murders.
A man was arrested after allegedly stabbing his sister and two cousins to death in a Maryland home on Friday while he was babysitting them.
Police identitied the girls on Saturday morning as Ariana Elizabeth DeCree, 9; Nadira Janae’ Withers, 6; and Ajayah Royale DeCree, 6.
Antonio Williams, 25, of Clinton, has been arrested on three counts of first-degree murder and other related charges in the slaying of the girls. Williams is the brother of Withers, police said.
A video message that appeared to be from the mother of the DeCree girls was posted on the woman’s Facebook page on Saturday, according to the Washington Post.
“Hug you all’s loved ones tonight,” the woman said. “Hold the people you hold close tonight because I never thought I would really say this and mean this. Tomorrow is not gauranteed..."
Williams was reportedly babysitting the girls but when a relative returned home from work at 7:30 a.m. she found the girls suffering from stab wounds in a basement bedroom, police.
A 2-year-old child was also reportedly found in the home, but was unharmed.
Williams, 25, was taken into custody by local police late that night in connection with the gruesome slayings. He allegedly stayed at the scene of the crime after the killings and later told police he stabbed the girls while they were laying in bed.
It was previously reported that Williams lived on the same block as the house where the girls were slain. It is not clear if he lived in the home.
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"We are now in the midst of a major investigation into what happened to these children and who killed them," police department spokeswoman Jennifer Donelan said earlier Friday.
Read: Woman Fatally Shoots Wife in the Face, Gets Charged With Murder: Authorities
“This is one of the the most difficult scenes that our officers arrived on,” Donelan said.
Relatives of the victims are being contacted and counseling has even been offered to officers who responded and found the bodies, NBC reported
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