Ammar Qurabi said in a statement that Mona Al-Gharib was kidnapped Friday at noon. The Egypt-based Qurabi is head of the National Organization for Human Rights in Syria.

An Egyptian police official says that the woman’s husband Thaer Al-Nashef has filed a complaint about the kidnapping. The official spoke on condition of anonymity as he was not authorized to speak to the media.

Al-Nashef was informed of the kidnapping through an anonymous text message he received on his mobile phone, Qurabi’s statement says.

The statement says that Al-Nashef had been receiving threats for some time. It says the group believes that Syrian government agents carried out the abduction.