At least nine people are dead after a UPS aircraft crashed on Tuesday upon departing the Louisville Muhammad Ali International Airport in Kentucky, authorities said, sending a massive plume of smoke into the air and leading authorities to urge residents of a large swath of the nearby area to shelter in place following the fiery crash.

The number of fatalities is expected to increase after a UPS plane crashed Tuesday near the Louisville International Airport in Kentucky, Gov. Andy Beshear said.

U.S. Transportation Secretary Sean Duffy warned if the shutdown continued into next week, some airspaces may be closed due to a lack of air traffic controllers.