Excerpts from Chicago.cbslocal.com:

The Waukegan Fire Department was called at 5:15 p.m. on Monday for a fire at 542 Washington St. in Waukegan, near the downtown area.

Firefighters found an apartment on fire on the 10th floor of a 12-story building. At the scene, they found the body of an elderly man, who was pronounced dead on the scene. The fire was contained to one unit and no one else was displaced.

The fire department is investigating with the help of the Waukegan Police Department, the Illinois State Fire Marshal’s office, and the Lake County Coroner’s office.