An Indianapolis mother was arrested on a charge of neglect of a dependent Tuesday night after neighbors saw her 3-year-old son wandering alone along a street on the southwest side. Police were called to the 4600 block of West Troy Avenue after two women found the boy near their apartment building. The boy was “wet and trembling” and wore no shoes or coat, the report said. Roial Harris said she left her son asleep while she went to the Laundromat. The child was placed in the custody of Harris’ parents.