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The lira lost 1.42 percent in value against the dollar to trade at 2.33 lira to the dollar, its lowest value since late January this year when the country was on the verge of a full scale currency crisis.
Against the euro, the lira lost 1.05 percent in value to trade at 2.90 lira to the euro.
The arrests of over two dozen journalists, television producers and police on Sunday rattled markets already concerned about Turkey's exposure to emerging market weakness and poor sentiment linked to the embattled Russian ruble.
Further pessimism also came from poor Turkish jobless figures for September released Monday which showed a 10.5 percent unemployment rate, the highest figure since February 2011.