Official figures show that factories and refineries in the euro zone slowed production slightly in March in  line with economists' expectations.

Industrial output in the euro zone rose 0.4% in March from February and 3.7% over the year, according to figures from the EU's Eurostat agency.

The figure marked a slight slowdown from February when production grew 0.5% over one month and 3.9% over a year, Eurostat said in a downward revision to its initial estimates made last month.