<p>An extra-alarm fire in the Back of the Yards neighborhood tore through a building, leaving four people including two firefighters hurt and more than a dozen people displaced Thursday morning. </p><p>The fire, which started near the 4500 block of South Laflin Street and was extinguished by 6:45 a.m., erupted about 5 a.m., according to a fire department spokesperson.</p><p>The department's response was elevated to an extra-alarm, bringing more than 100 firefighters to the scene and at least five ambulances, according to the spokesperson. </p><p>Two occupants of the building were taken in good and fair condition to hospitals, while two firefighters suffering minor injuries were also taken to hospitals, the spokesperson said.</p><div class="Enhancement" data-align-center><div class="Enhancement-item"> <div class="ExternalContent-wrapper" > <div class="TweetUrl"> <blockquote class="twitter-tweet"><p lang="en" dir="ltr">2-11 alarm in the 4500 block of South Laflin Street was secured at about 6:45 a.m.