Turkey's consulate in Aleppo, however, is still functioning, Turkish Foreign Ministry spokesman Selcuk Unal said.

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He and his Turkish cameraman, Cuneyt Unal, are believe to have been arrested by Syrian forces in Aleppo.

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"We asked the French to step up security around our diplomatic missions in France, " said Selcuk Unal, a spokesman for the Turkish Foreign Ministry.

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