The founder of a project that fights for girls' education in Afghanistan was arrested by the Taliban authorities in Kabul.
The news was released by his brother and by the UN mission in Afghanistan.
"Matiullah Wesa, head of PenPath1 and advocate for women's education, was arrested on Monday in Kabul," the UN tweeted.
Wesa's brother confirmed the arrest, saying he was taken outside a mosque after prayers on Monday night.
"Matiullah had finished praying and left the mosque when he was stopped by some men in two vehicles," Samiullah Wesa told AFP.
"When Matiullah asked for their identity cards, they beat him and forcibly took him away."
The United Nations Assistance Mission in Afghanistan (UNAMA) has asked the authorities to "clarify his position, the reasons for his arrest and to guarantee access to legal representation and contacts with his family".