Chicago ? Three 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.

A third Chicago man, Gino Wilson, 18, was charged with one count of first-degree murder and two counts of armed robbery. He also was being held on a Kankakee County murder warrant, police said. Wilson was wounded Monday and is in a suburban hospital, police said.

The Knicks said Quentin Richardson, 25, left the team Monday to return to Chicago for a family emergency. Knicks spokesman Jonathan Supranowitz said Wednesday the team was not discussing the details and it was uncertain when Richardson would return to the team.

Lee Richardson Jr. and his father were outside the house Monday afternoon when a van pulled up, and three men jumped out. The men ordered the Richardsons to lie down before robbing them, Quentin and his sister, Rochelle Richardson, told the Chicago Sun-Times in Wednesday’s editions.

Lee Richardson Jr., a Chicago music producer, fought back and was shot four times, said Rochelle Richardson, 34.

“He was everything. It’s hard to believe how hard it hurts,” Rochelle Richardson said.

The tragedy was the second time a Richardson child was fatally shot. When Quentin Richardson was 12, his 23-year-old brother Bernard was shot to death on the city’s South Side.