A woman died at Chicago’s O’Hare International Airport early Thursday after she became trapped in machinery in the baggage claim area.

The unresponsive woman was found trapped under a conveyor belt, the Chicago Fire Department told CBS Chicago.

Police sources told the outlet that the woman was in her 40s.

She was found in the baggage claim area of Terminal 5, which houses several international air carriers, just before 8 a.m.

It was not immediately clear if the woman was a traveler or an airport employee.

She was pronounced dead at the scene, according to NBC Chicago.

Police have not released any additional details.

This is a developing story, check back for updates.