ISIS Suspect Held Over Threat to U.S. Consulate in Istanbul: Report

Turkish authorities arrested a suspected ISIS militant on Tuesday for allegedly planning an attack on the U.S. Consulate in Istanbul, a security official told Reuters.

Police originally detained two men at a bus stop in the southeastern city of Kahramanmaras for questioning, the official said. A local court on Tuesday ordered the arrest of one and let the other go, he said, without giving further details.

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Dogan news agency said the arrested man was of Syrian origin and had been planning a suicide attack on the consulate.

Turkey has been on high alert after more than 100 people were killed by two suicide bombers in the capital Ankara in October. A similar attack at a town near the Syrian border in July left 33 dead.

Last week, the consulate canceled its services for a day, citing information about a possible security threat. This week, the U.S. Embassy in Ankara said it would scale back its services on Monday and Tuesday because of a possible security threat.

Turkey, a NATO member, has carried out air strikes against Islamist insurgents in neighboring Syria as part of the U.S.-led coalition fighting the militant movement.

On a visit to Turkey on Tuesday, U.S. Defense Secretary Ash Carter urged Ankara to do more to help destroy ISIS militants.