FILE - In this Wednesday, March 11, 2017 file photo, Ukrainian and Crimean Tatar activists hold paper figures symbolizing victims of the Russian annexation of Crimea during a demonstration in Kiev, Ukraine. Russia's domestic security agency has charged six people in Crimea with involvement in an extremist organization it was announced on Wednesday, Oct. 11, a move that an activist describes as part of Moscow's crackdown on the Crimean Tatars. (AP Photo/Sergei Chuzavkov, File)

FILE - In this Wednesday, March 11, 2017 file photo, Ukrainian and Crimean Tatar activists hold paper figures symbolizing victims of the Russian annexation of Crimea during a demonstration in Kiev, Ukraine. Russia's domestic security agency has charged six people in Crimea with involvement in an extremist organization it was announced on Wednesday, Oct. 11, a move that an activist describes as part of Moscow's crackdown on the Crimean Tatars. (AP Photo/Sergei Chuzavkov, File)

MOSCOW (AP) — Russia’s domestic security agency said Wednesday it detained six people in Crimea accused of involvement in an extremist organization, a move described by one of the suspects’ lawyer as part of Moscow’s crackdown on the Crimean Tatars.

Emil Kurbedinov, a lawyer for one of the six detainees, said that police also rounded up nine other Crimean Tatars who protested the detentions in the Crimean town of Bakhchisarai.

The Federal Security Service or FSB, the main KGB successor agency, said it has stopped the activities of a local cell of Hizb-ut-Tahrir, a radical Islamist group which Russia and several other ex-Soviet nations banned as a “terrorist” organization.

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The FSB said in a statement carried by Russian news agencies that it has opened a criminal probe against six people suspected of involvement in the group.

Kurbedinov, a lawyer for Suleiman Asanov, whom the FSB accused of organizing the cell, described the charges as “absurd.” He said all six detainees were local Crimean Tatar activists who opposed Russia’s 2014 annexation of Ukraine’s Crimea.

Russia has faced criticism for infringing on the ethnic group’s rights since the annexation.

“It’s yet another attempt to intimidate people with ‘terrorism’ and ‘extremism’ labels,” Kurbedinov said by phone from Bakhchisarai.

Kurbedinov said nine other Crimean Tatars who were protesting the detentions were taken into custody for holding an unsanctioned demonstration and were set to face court hearings Thursday.

Zair Smedlyayev, who heads an association of Crimean Tatars, also said the move was part of a continuing crackdown on the Turkic ethnic group.

On Monday, Turkish President Recep Tayyip Erdogan, who was visiting the Ukrainian capital, said Turkey was monitoring the situation of Crimean Tatars and thanked Ukraine for defending their rights.