ATHENS, Greece (AP) — A fire has broken out at a hotel in the Greek capital, with fire crews evacuating the building and rescuing at least one hotel employee.

It was not immediately clear what caused Thursday’s fire at the Athenaeum Palace or how many people were inside. The fire department said it had deployed 35 firefighters with 12 vehicles and had brought the blaze under partial control.

Smoke could be seen coming out of at least two side windows on the upper floors of the seven-story hotel, while an Associated Press reporter on the scene saw firefighters using a ladder to evacuate a woman in a housekeeping uniform.

Others came out of side entrances, some covered with blankets. Fire crews were going room-to-room inside the hotel to ensure nobody remained inside.