A Chicago woman was arrested after allegedly abandoning her granddaughter on a CTA bus.

Elaine Overton was charged with endangering the life and health of a child and possession of heroin, according to police.

Police were called to a CTA bus Wednesday night when a passenger noticed the 3-year-old girl did not have adult supervision, police said.

Officers were able to locate the toddler's mother and later arrested Overton, according to a Chicago Police News Affairs press release.

SOURCE:http://abclocal.go.com/wls/story?section=news/local&id=8942601