French Prime Minister Manuel Valls says it is "vital" the European Championship in France goes ahead to show the country will not cower in the wake of the deadly attacks in Brussels and Paris.

Dozens of people died after 34 people were killed and more than 200 injured after explosions at Brussels airport and subway on Tuesday.

France remains in a state of emergency since 130 were killed on a night of attacks in Paris in November.

The attacks have raised doubts as to whether Euro 2016 should go ahead.

Speaking on Europe 1 radio station on Wednesday, Valls says "big sporting events, big cultural events, are vital to show that we are a free people," adding, "So, yes, Euro 2016 and the Tour de France will take place."