A senior Kurdish official from Syria was detained in the Czech Republic on Sunday under an extradition request from Turkey, according to the Czech police and the Anadolu News Agency in Turkey.

The official, Salih Muslim, is the foreign affairs spokesman for the political coalition that governs the Kurdish regions of northern Syria, the Movement for a Democratic Society. He was detained after an Interpol “red notice” was issued by the Turkish government, which describes him as a terrorist, the agency said.

The Czech police issued a statement confirming the arrest of a 67-year-old man on a Turkish extradition request. Mr. Muslim’s aides confirmed that the statement referred to him.

An official with the Kurdistan National Congress in Vienna said that Mr. Muslim had been arrested at his hotel in Prague, the Czech capital, where he was speaking against Turkey’s invasion of the Kurdish enclave of Afrin, in northwestern Syria.