Photo taken on March 29, 2020 shows a cordoned-off area one week after earthquakes in central Zagreb, Croatia. A series of earthquakes hit Croatian capital Zagreb on March 22, leaving some 30 people injured. (Matija Habljak/Pixsell via Xinhua)

Firefighters repair quake-damaged roofs one week after earthquakes in central Zagreb, Croatia, on March 29, 2020. A series of earthquakes hit Croatian capital Zagreb on March 22, leaving some 30 people injured. (Jurica Galoic/Pixsell via Xinhua)

A man repairs a quake-damaged wall in central Zagreb, Croatia, on March 29, 2020. A series of earthquakes hit Croatian capital Zagreb on March 22, leaving some 30 people injured. (Jurica Galoic/Pixsell via Xinhua)

Photo taken on March 29, 2020 shows a cordoned-off area one week after earthquakes in central Zagreb, Croatia. A series of earthquakes hit Croatian capital Zagreb on March 22, leaving some 30 people injured. (Jurica Galoic/Pixsell via Xinhua)

A woman looks at a damaged building in central Zagreb, Croatia, on March 29, 2020. A series of earthquakes hit Croatian capital Zagreb on March 22, leaving some 30 people injured. (Matija Habljak/Pixsell via Xinhua)