Lt. Denis Walsh resigns week after interim superintendent moved to fire him.

Interim superintendent moves to fire high-ranking cop, suspend two.

Six Koschman cops have been singled out for discipline, but three quit first, avoiding sanctions, the Chicago Sun-Times has learned.

Another high-ranking Chicago police officer caught up in the botched investigation of Koschman death retires.

Police shakeup continues with sudden retirement of Constantine “Dean” Andrews, who closed Koschman cae in 2011o without filing  charges against Daley nephew.

Same police code of silence seen in Laquan McDonald death as with David Koschman, Carol Marin writes.

Supt. Garry McCarthy off-base in promoting cop in Koschman case.

Promotion of cop still under investigation is a slap in the face of all Chicagoans.

McCarthy’s new chief of detective” Cop under investigation in Koschman case.

Medical examiner’s office called it homicide, but 7 years later, no charges had been filed.