Aurora police are responding to the Henry Pratt Company for a report of an active shooter situation. 

Police could only say command staff were at the site. It remained unclear if there were any injuries. 

The valve manufacturing company is located at 401 S. Highland Ave. near Prairie Street, according to its website. 

Holy Angels Catholic School said it was on lockdown amid the report. 

West Aurora School District 129 said all students were being held in place "for their safety" after "reports of an active shooter at the Henry Pratt building." 

"Per directions from the county sheriff, the District has been advised to go into soft lockdown situation across the district. Teaching will continue with reduced movement. Normal operations will resume when the soft lockdown has been lifted. No one will be allowed to leave or enter our buildings until the lockdown has been lifted," the district wrote on Facebook. 

Illinois State Police District 5 said it was sending troopers to the scene.