A mother accused of abandoning a 14-month-old Maryland boy on the front porch of a stranger's home in central Ohio is scheduled to be arraigned on a child endangerment charge as police searching for him warn he may be dead.

Columbus officers searched Tuesday near a creek with a dive team and helicopter after Dainesha Stevens admitted she and a male acquaintance left the boy, Cameron Beckford, last Friday because they could no longer care for him.

Stevens is scheduled for arraignment Wednesday in Franklin County Municipal Court on two felonies, including tampering with evidence. Online court records list no attorney for her.

A missing-child alert was issued after the boy's father told Maryland police the mother had taken Cameron and his 6-year-old sister to an unknown location in mid-December.