A Bronx mother was arrested Friday after her 4-year-old son was found wandering through the street alone in the middle of night.

Leslie Hildago, 20, was arrested outside of her Bronxdale apartment and charged with endangering the welfare of a child. A neighbor found her son outside and took him to a local daycare center.

Daycare center owner Pamela Santana said the pre-schooler told her he was left home alone.

“He was lost,” Santana told News 12. “Mommy left him home alone, went to the store. There were no lights in the apartment.”