Halkbank shares slump as much as 16 percent after executive's arrest

Shares in Turkey's Halkbank tumbled as much as 16 percent on Wednesday, after U.S. prosecutors charged one of its senior executives with participating in a multi-year scheme to violate U.S. sanctions against Iran.

At 0716 GMT, Halkbank shares were 11.28 percent lower. Istanbul's banking index was down 2.22 percent and the main index <.XU100> was 0.98 percent lower.

(Writing by Daren Butler; Writing by David Dolan)