An Indiana couple was arrested Monday after their two toddlers were found wearing dirty diapers and playing along railroad tracks during a rainstorm, authorities said.

Police in Muncie responded to a call around 5:40 p.m. after receiving a report of “two juveniles running around on the train tracks in the rain.”

A motorist at the scene alerted the responding officer that he had placed the two boys, ages 1 and 2, in his vehicle after finding them. He told the officer a train had just passed through the area.

The officer took the boys to City Hall. He described them as having “a large amount of energy” and appearing “hungry and thirsty,” a police affidavit said.

An official from the Department of Child Services assumed custody of the boys and placed them into foster care.

Just before 8 p.m., the boys’ mother, 22-year-old Taylor Nicole Shively, reported her children missing. According to the affidavit, Shively explained she was on new medication and fell asleep “for a long time so the children were able to get out.”

Shively and her husband, 28-year-old Brady Ray Shively, were arrested and charged with two counts of neglect of a dependent.

Taylor Shively’s mother told authorities it was “the fourth time [she] is aware of that the children had gotten out of the house because [their parents] do not watch them.”