Portugal declares day of mourning after four die in helicopter crash

One person still missing after aircraft that was returning from a firefighting mission crashed into river

Portugal has declared a day of mourning after a firefighting helicopter crashed in the Douro River leaving at least four dead and one missing.

The pilot survived the accident, which happened in Lamego a little after 12.30pm on Friday afternoon while the helicopter was returning from fighting a fire near Baiao, just inland from the city of Porto.