Photo: Motorist looks towards makeshift memorial on porch of Tacony home where twins were allegedly killed by mother.

Makeshift memorial for twins allegedly killed by their mother on the 3600 block of Ditman St.  in the Tacony section of Philadelphia as seen on Friday afternoon May 25, 2012. Shown is a motorist taking a peek at the memorial as he waits for the traffic light to change at Ditman and Levick St. Alejandro A. Alvarez / Philadelphia Daily News / © 2012 Philadelphia Media Network