'Transformers 3' filming in downtown Chicago

Die-hard fans of the Transformers movie franchise may have to spend some time in Chicago.

Crews filming for "Transformers 3" plan to be in parts of the city until the end of August.

That means some parts of downtown streets will be closed this weekend until Monday morning.

The city's Office of Emergency Management and Communications says helicopters will also be flying in the area for aerial shots and stunt parachutists.

"Transformers 3" stars Shia LaBeouf, Patrick Dempsey, Frances McDormand, John Malkovich and model Rosie Huntington-Whitely.

The movie is due in theaters next summer.