Many hurt, including multiple officers, in Illinois mass shooting

A gunman has been apprehended after a "mass shooting" in Aurora, Ill., reports Chigaco's WGN9 News.

Kane Countys SWAT team, the U.S. Marshals Task Force and other police are on the scene of an industrial park, which is near Highland Avenue and Prairie Street. There are several businesses in that area, including Henry Pratt Company. The streets in the area are closed.

Security analyst John OMalley told WGN that four police officers were injured in the shooting. There are also reports that multiple civilians have been shot.

ABC News has eyewitness reports:

John Probst, a Henry Pratt employee who escaped the building, said he saw a man holding a pistol with a laser scope. He said he recognized the shooter as a coworker.

There would have been approximately 30 people in the building at the time of the shooting, Probst said.

Probst said he saw other coworkers injured and that the shooter was firing indiscriminately....

"(The shooter) just went ballistic," John Probst, who works at Henry Pratt and was in the building at the time told ABC. "[One victim] came running down; he was bleeding pretty bad."

Probst said he recognized the shooter as a coworker. Probst said he was "rolling down the aisles" with "a pistol with a laser on it."