ANKARA, Dec 21 (Reuters) - Sixteen people were arrested in Turkey on Saturday, including the sons of two cabinet ministers and the general manager of state-owned Halkbank, during a corruption investigation, CNN Turk and other media reported.
Scores of others have already been detained in the inquiry, which poses the biggest challenge to Prime Minister Tayyip Erdogan's decade-long rule.
(Reporting by Humeyra Pamuk; Editing by Andrew Heavens)
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