A doctor has filed a lawsuit against City Colleges of Chicago, claiming he was fired in retaliation for raising questions about four unidentified, decomposing cadavers stored in boxes in a locked, unrefrigerated closet.

Dr. Micah Young filed the lawsuit this week in Cook County Circuit Court. Young had been dean of the Health Sciences and Career Programs at Malcolm X College, one of seven colleges in the system.

Young says he was fired Feb. 4 because he called attention to "severely decomposed cadavers" that weren't properly identified and might cause workplace safety issues. He says the bodies had been stored at least 12 years.

Young's attorney told The Associated Press his client presumes they were used in anatomy classes.

A spokeswoman says City Colleges doesn't generally comment on pending litigation.