An 89-year-old man died at Mitchell International Airport in Milwaukee on Monday afternoon. 

According to Milwaukee County Sheriff's Office, deputies were alerted by Airport Operations of a medical emergency in Concourse C.  An off-duty Franklin police officer and an off-duty registered nurse were performing CPR on an unresponsive man.   Milwaukee County Fire and Milwaukee Fire departments also responded. 

At 4:25 p.m., Andrew Economopoulos, age 89, of Gurnee, Illinois, was pronounced deceased at the scene.  He had been traveling from New York with two others.