LAFAYETTE — A Eunice man who authorities believe used his finger to poke his girlfriend’s baby in the head hard enough and long enough to kill her has been indicted on one count of second-degree murder.

A grand jury on Thursday formally charged Robert H. Miller III, 34, in the death of 19-month-old Victoria Renee LeJeune, who was pronounced dead Feb. 24 after her mother called 911.

Miller is free on $153,000 bond, St. Landry Sheriff’s Office public information officer Capt. Megan Vizena said. Sheriff’s officials announced Miller’s arrest on March 4.

According to Miller’s arrest affidavit, Deputy Mark Fontenot found the child unresponsive when he arrived at the mobile home where the girl lived with her mother, Kimberly LeJeune, who had called 911.

“Deputy Fontenot noticed numerous bruises to the infant’s face and body,” the affidavit, written by sheriff’s Lt. Jesse Martin Jr., stated.

An autopsy revealed Victoria died from “acute traumatic brain injury due to blunt force injury,” Martin wrote, though the forensic pathologist found no signs the girl was injured in a fall.

Martin wrote that on Feb. 28 the girl’s mother said her daughter had no bruises until hours after her live-in boyfriend, Miller, came home from work Feb. 22, two days before Victoria died.

“Ms. LeJeune stated she saw Mr. Miller poke Victoria in the head multiple (five times at most) over the past eight weeks they have lived together,” Martin wrote. “Ms. LeJeune stated she saw Mr. Miller poke Victoria in the head multiple times (her head was forced back each time) on Feb. 22, 2013.”