Firefighters are battling a blaze at Chicago's Holy Name Cathedral, a city landmark and the seat of Cardinal Francis George.
Flames could be seen at three points of the building early Wednesday, including on the roof of the church.
Chicago Fire Department spokesman Larry Langford says the fire hasn't yet spread from the roof to the church's sanctuary. But he says there's a lot of water inside the building.
No injuries have been reported.
The original Holy Name was destroyed in the Great Chicago Fire. The new cathedral was completed in 1875.
The cathedral recently underwent restoration and repair work after engineers found structural weaknesses in the roof.