Around 3 p.m. on Monday, 20-year-old Jerry Greer and 23-year-old Cortez Lloyd attempted to rob a man in the Chicago suburb of Maywood.

The victim fended off the two robbers with a gun, shooting Lloyd multiple times in the chest.

Lloyd was taken to Loyola University Medical Center, where he was pronounced dead at 3:38 p.m.

On Tuesday, Lloyd’s accomplice, Jerry Greer, was arrested. On Thursday, he was charged with Lloyd’s murder.

Greer’s charge falls under what is called the “felony murder rule,” which holds the person attempting to commit a felony – in this case robbery – responsible for any deaths that happen as a result of the crime. In order for the “felony murder rule” to come into play, a death has to be linked to the crime. Typical felonies that fall under this rule include: robbery, burglary, kidnapping and rape.

Because Greer was carrying out the robbery with Lloyd, he is held responsible for his accomplice’s death, even though he did not fire the gun.

The man who shot Lloyd was not a concealed carry permit holder, and while he had not been charged with a crime at this time, the investigation continues.