ATHENS, Greece — Wildfires intensified across southern Europe on Wednesday with a round-the-clock battle to protect the perimeter of Greece’s third-largest city and at least three deaths reported in Spain, Turkey and Albania.

Outside the Greek port city of Patras, firefighters struggled to protect homes and agricultural facilities as flames tore through pine forests and olive groves.

By David Latona PATRAS, Greece/MADRID (Reuters) -Hundreds of firefighters battled to put out wildfires across southern Europe on Thursday, some of which are believed to have been set deliberately by arsonists and stoked by an extended heat wave gripping the region.