DOYLESTOWN, Pa. — A 30-year-old woman with a painkiller addiction has been accused of killing her 11-week-old son with a lethal mix of drugs in her breast milk.

Samantha Jones was charged Friday with criminal homicide in the April 2 death of her baby.

An autopsy found the baby died from a combination of methadone, amphetamine, and methamphetamine, the Bucks County district attorney’s office said in a statement.

According to an affidavit, Jones told police she’d been too tired to make the baby a bottle when he awoke crying at 3 a.m. and instead breastfed him.

A few hours later, the baby was pale and had bloody mucus coming from his nose, she told police. Jones’s mother began CPR at the instruction of a dispatcher after they called 911, the affidavit said.

Police arrived at the home in New Britain to find the baby in cardiac arrest. He was taken by ambulance to a hospital, where he died.

The affidavit stated that Jones said she primarily had been breastfeeding the baby, but switched to formula a few days before the baby’s death, saying the infant wasn’t getting enough milk.

Jones told police that she had been prescribed methadone because of an addiction to painkillers, that she had taken it during her pregnancy, and that she was taking it at the time of the baby’s death.

ASSOCIATED PRESS