The economic downturn in the eurozone deepened this month, with a key economic indicator released Thursday slumping to a two-month low, dpa reported. The London-based research group Markit said its Purchasing Managers' Index (PMI) for the 17-member currency bloc's manufacturing and service sectors fell to 47.3 points this month, compared with 48.6 in January. This took the indicator further away from the key 50-point reading, which marks economic expansion. Analysts had expected the indicator to rise to 49 points.