Adrian Rucker, 25, of Freeport, was armed with a rifle when he encountered police Thursday night inside an apartment building in Chatham, police said. An officer then inadvertently fatally shot another cop,

Adrian Rucker, a 25-year-old man from Freeport, Illinois, is scheduled to appear in court on several felonies, including armed violence, illegal gun possession, and illegal drug possession, in relation to the accidental shooting death of Chicago police officer Krystal Rivera.

Adrian Rucker is charged with armed violence and other felonies after a Chicago police officer's fatal shooting.