An autopsy report says a 2-week-old found dead in the woods over the weekend died of blunt force trauma.

>> Watch the news report here

Now, investigators say they plan to get arrest warrants for the baby's father, Christopher McNabb.

Two-week-old Caliyah McNabb was reported missing by her mother on Saturday in Newton County, Georgia.

A 911 call obtained by WSB-TV reveals that a 2-year-old child was the first person to notice that her newborn sister disappeared.

"My 2-year-old says she's gone. I've looked everywhere in the house, and I don't know another possibility," Cortney Bell told a Newton County 911 operator.

The operator asked Bell if she believed somebody took her baby.

"Her blanket is gone. Her pacifier is on the floor. Her blanket is not with us," Bell said.

Bell told the operator she fell asleep on the couch inside her home. Bell said she last saw Caliyah at 5 a.m. Saturday. Five hours later, she called 911.

"Me and him (Christopher McNabb) woke up together. She (2-year-old daughter) woke us up together," Bell said.

The baby's father, Christopher McNabb, has been a person of interest since the baby's death. He was arrested on an unrelated charge, a probation violation out of Bartow County, after attempting to elude deputies on Sunday, according to investigators.