DAHLONEGA — The mother of a 7-month-old boy who died last year after being smothered while sleeping is expected to be booked into the Lumpkin County jail today on murder charges.

Christy Callihan Whitey, 24, was indicted by a Lumpkin County grand jury in the death of her son, Christian Luke Whitey.

The indictment alleges that Whitey consumed methamphetamine before she rolled over on the child.

Lumpkin County Sheriff’s Investigator Darren Martin said Whitey called 911 on the morning of Oct. 14 to report that her child was not breathing. Whitey had been sleeping in the same bed with the child inside a travel trailer that sat on her father’s property on Porter Springs Road in Dahlonega.

Whitey told investigators that she awoke during the night to feed the boy and he was fine.

An autopsy of the child showed no signs he had been fed in the hours prior to his death, Martin said. The cause of death, released in February, was asphyxiation by overlay.

“It is believed she rolled over on the child and the child was smothered during the night,” Martin said.

Whitey is 5 feet 5 inches and 140 pounds, according to sheriff’s records.

She submitted to a blood toxicology test that showed she had methamphetamine in her system at the time of the child’s death, officials said. Authorities also found drug paraphernalia and methamphetamine residue in the trailer, Martin said.

A local child fatality review board convened to discuss the boy’s death after the autopsy results were finalized and before the case was presented to a grand jury, Martin said.

Martin said Whitey was in a rehabilitation center in Alto and was scheduled to be picked up by officials today to be booked on the charges.

Whitey has a Sept. 25 arraignment date in Lumpkin County Superior Court.