No injuries were reported after a massive fire tore through a vacant warehouse early Saturday morning in the Little Village neighborhood on Chicago's Southwest Side.
Emergency crews responded to the fire in the 2500 block of South Kostner around 2 a.m., according to the Chicago Fire Department.
The blaze was upgraded to a five-alarm fire within an hour. About 200 firefighters and paramedics were on the scene.
About 3-4 parts of the building collapsed, according to Commissioner José A. Santiago of the Chicago Fire Department.
The old factory warehouse has been vacant for 20 years, Santiago said, leading investigators to believe that the blaze may have begun as a warming fire started by vagrants.
Around 5 a.m., the fire department made the decision to attack the flames from the interior of the building, and the fire was then struck out just before 8:45 a.m., officials said.
No one was injured in the incident, which remains under investigation.