An Indiana mom was busted in connection with her newborn’s death — when investigators determined she breastfed the tot after using methamphetamine, according to new reports.

Ashlee Rans, 36, of Plymouth, initially told authorities that she put her newborn next to her in bed to breastfeed on Dec. 19, when both of them dozed off, FOX 23 reported.

Then, she claimed, she rolled onto her newborn as she slept, according to a probable cause affidavit obtained by WNDU.

But investigators determined that wasn’t how the infant died, according to the report.

“The cause and manner of death were determined by the forensic pathologist, and he determined the infant died of acute methamphetamine intoxication, and the manner of death was homicide,” Marshall County Chief Deputy Prosecutor Tami Napier told the station.

An autopsy, which took place a day after the infant’s death, showed both amphetamine and methamphetamine in the baby’s system, according to the report.

Rans initially only fessed up to using marijuana — but after the autopsy, she did admit to using meth two days before her child’s death, the station reported.

Rans has been charged with two separate counts of neglect of a dependent resulting in death.

She is being held at the Marshall County Jail, and could spend between 20 and 40 years behind bars if convicted.