The eurozone economy lost momentum in August as a key business indicator released Thursday slumped to a two-month low. The purchasing managers index (PMI) for the currency bloc's manufacturing and service sectors fell to a lower-than-forecast reading of 52.8 this month from 53.8 in July, the London-based Markit research group said. Analysts surveyed by dpa-AFX had expected the PMI to come in at 53.4 points in August. Still, a reading above 50 indicates economic expansion.