School students in Aurora, Illinois were placed in “soft lockdown” on Friday afternoon, after a shooter was reported at a local business.

In a statement posted to Twitter, the Aurora police department said: “We have an active shooter incident at 641 Archer Av[enue]. This is an active scene. Please avoid the area.”

CNN said an Aurora city official had told the network that a total of four law enforcement officers and multiple civilians were injured in the shooting.

Aurora Illinois ward four Alderman Bill Donnell said that information was relayed to him by the city’s deputy mayor, Chuck Nelson.

No fatalities were confirmed. Aurora’s official municipal Twitter account later posted a message saying the shooter had been apprehended.

In a statement posted to Facebook, West Aurora school district 129 said: “There are reports of an active shooter at the Henry Pratt building near Cleveland and Prairie just east of Luigi’s Pizza, as a result, we are holding all district students in place for their safety, there is a police presence in the area.

“Per directions from the county sheriff, the district has been advised to go into a 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 soft lockdown has been lifted.”

Video footage on local media showed numerous police cars surrounding a large commercial building in Aurora, which is about 40 miles west of Chicago.