One person is dead and two others are being treated for gunshot wounds after a shooting that has turned into a standoff at a Super 8 motel in Rockford, Illinois, USA, authorities said, CNN reported.

The suspect is barricaded inside the motel, Rockford Police Chief Daniel O'Shea said in a news conference near the scene.

Authorities were called to the motel shortly after midnight.

A SWAT team has been called to the active scene that "continues to evolve," and the motel has been evacuated, according to the chief.