Reading, PA: "Two alleged robbers shot dead outside Reading corner store"

This might possibly be a concealed carry case.  From The Philadelphia Inquirer:

Two alleged robbers are dead in Reading after what police have described as a "robbery in progress" of a corner store this afternoon, according to authorities. 

A civilian, who was not identified by police, shot and killed the suspects sometime after 3 p.m., a sergeant in criminal investigations at the Reading police department said. He declined to give any details on how the civilian shooter came in contact with the alleged robbers. He also did not identify the suspects. . . .