ROME (AP) — Firefighters worked to rescue a worker trapped for hours beneath the rubble of a medieval tower that partially collapsed while under renovation in the heart of Italy's capital on Monday, critically injuring another worker.

Firefighters faced a complex task as the structure continued to give way as they tried to get near the trapped worker through a first-floor window, forcing their retreat on telescopic aerial ladders in a cloud of smoke. Another approach on two ladders was also aborted, and a drone sent up in their stead.

As dusk approached, firefighters lifted on a crane used giant tubes to suck rubble out of the second-floor window.

Three workers were rescued unharmed after the initial midday collapse, said firefighter spokesperson Luca Cari. Italian media reported that

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