Police in Megara, western Attica, have detained a 41-year-old businesswoman over alleged debts of 206,801 euros to the state.

The woman, who owns a business trading in coffee and bottled water, is the latest in a string of dozens of arrests for large-scale tax evasion being carried out by authorities in a bid to raise much-needed revenue.

Greece's foreign creditors -- the European Commission, the European Central Bank and the International Monetary Fund -- have pushed authorities to crack down on tax evasion, which is almost endemic, but although an increasing number of offenders have been traced, problems remain in collecting revenue.