Police in Maryland say a traffic stop led to the arrest of the alleged shooter, Marcus White of Philadelphia.
Investigators say White was driving a stolen car and had a gun in a box along with dozens of unissued money orders.
Police say White confessed to the robbery along with shooting and wounding the 74-year-old clerk back on June 1st.
They say he also admitted robbing the Turkey Hill in Coatesville as well as the Limerick Post Office.
A second man who was with White during the store robberies is still being sought.
Police said White also told them a third person acted as a look-out outside the stores.
