Security Ministry official Abdulqadir Mohamadiyev said two of those arrested were members of the movement's leadership.
"One of them is the deputy leader of this party's cell [in Tajikistan], and the prosecutor's office of the Soghd region [in northern Tajikistan] is investigating this case now," he said. "The other person, whose investigation is coming to an end, is a cell leader in the Soghd region. Both of them have been in detention and their cases are in the final stages."
Mohamadiyev said most of those arrested were Tajiks of Uzbek origin and had been trained in Uzbekistan. They had, he said, moved into the Soghd region, where they had sought to spread Hizb ut-Tahrir's ideas and to recruit new members.
Hizb ut-Tahrir, which calls for the establishment of a pan-Islamic state, is banned in most of Central Asia. The group says it rejects the use of violence.
(RFE/RL's Tajik Service)