Lakeview mom charged in baby's death

April 15, 2011 7:42:19 AM PDT
A woman from Chicago's Lakeview neighborhood is charged with killing her 8-month-old son two months ago.

Investigators say Janet Thies-Keogh was undergoing treatment for post-partum depression. She allegedly killed her son, Colin, in February while her husband was out.

The boy's autopsy initially indicated further studies were necessary. But on Wednesday, medical examiners determined the child died from suffocation.