The eurozone has returned to recession as the region's debt crisis continues to hurt demand, figures show.

The economy of the 17-nation bloc contracted by 0.1% between July and September, after shrinking 0.2% in the previous three months, Eurostat said.

The eurozone was last in recession in 2009, when the economy contracted for five consecutive quarters.

The news comes a day after millions of workers in Europe held a day of action against austerity measures.

Protests in Spain, Italy and Portugal were marred by violence.