The chairman of the youth wing of the opposition Musavat (Equality) party in Azerbaijan has been detained.
Musavat party officials say Farac Karimli was detained at a health center in Baku on July 23.
Karimli's father, Rafiq Karimli, told RFE/RL that his family had not been informed where his son is being held.
On July 17, Farac's brother Sirac was arrested and charged with drug possession.
According to Musavat officials, Karimli's detention is politically motivated as the 29-year-old opposition activist is an administrator of the party's website and played a big role in the party's online activities.
Interior Ministry spokesman Ehsan Zahidov told RFE/RL he has no information regarding Karimli's arrest or current whereabouts.