Prosecutors allege that 26-year-old Marianella Torres-Matos left the toddler and his 2-year-old sister in the Allentown apartment Nov. 19 while she ran errands, including going with a friend to visit an inmate at Lehigh County Prison.
Authorities say when she checked on the children, she found her son under the 160-pound dresser. The child was revived but later died at Lehigh Valley Hospital-Cedar Crest.
Torres-Matos was also charged with misdemeanor counts of endangering the welfare of children. A listed number for her could not be found and authorities said she had no current address; it was unclear whether she had an attorney.