Yemen's Houthi rebels have detained five activists and a journalist in a crackdown on critics, Yemeni news website Almasdar Online reported Saturday.
Gunmen wearing police uniforms late Friday seized the six from their house in the central district of Jamaa in the rebel-held capital Sana'a, the site said, citing unidentified sources.
The six were taken to an unknown place, according to the report.
There was no comment from the Houthis, who have controlled Sana'a since September 2014.
The alleged detentions come three days after a three-member crew working for the Qatari news television Al Jazeera was released in Yemen's central city of Taiz.
Al Jazeera said the three had been abducted by unknown gunmen in Taiz on January 18.
Yemen is locked in a civil strife between the Iran-allied Houthis and forces loyal to Saudi-backed President Abd Rabu Mansour Hadi.
Saudi Arabia and fellow Sunni partners have carried out an air campaign in Yemen against the mostly Shiite rebels since March.