Two Chicago men were charged Wednesday in the shooting death of the brother of New York Knicks guard Quentin Richardson.

Lee Richardson Jr., 31, was shot outside the family's Chicago home Monday during a robbery, police said. His father, Lee Richardson, Sr., 62, was with him at the time but was not injured, family members said.

Elbert Dunnigan, 24, and Ishmael Clark, 29, were charged with one count each of first-degree murder and armed robbery, said Cook County state's attorney spokeswoman Marcy Jensen.

Clark also was charged with three counts of attempted murder of a police officer.