An Egyptian woman was arrested on Wednesday for running a Facebook page that "incites violence against the police and army," state news agency MENA reported.
The 35-year-old suspect was the administrator of a Facebook page called "The Revolutionary Alliance," which allegedly called on people to "disturb national security" and attack governmental installations, banks, police vehicles and other public property posts.
Police confiscated a laptop upon arresting her, MENA said, adding that the woman confessed to being "a member of the Muslim Brotherhood" and to participating in acts of sabotage.
The suspect allegedly confessed to communicating with a Brotherhood member who had taken refuge in Turkey and was assigning her orders for attacks.
Thousands of supporters of ousted president Mohamed Morsi have been arrested and are facing trials after his toppling in 2013. Hundreds others have been killed in clashes with security forces or opponents during their protests.
Authorities have blamed the Brotherhood, from which Morsi hailed, for a rising wave of militant attacks on security forces and installations, as well as attacks on public property.
The Brotherhood, already designated a terrorist group since last year, has denied any links to the violence and has insisted its aims are peaceful.
In August, Egypt's top prosecutor ordered an investigation into the administrators of a Facebook page called the "Popular Resistance Movement" on allegations of inciting violence against security forces.
In July, another suspect was held for 15 days pending investigations for the same reason.
The interior ministry said in January it had begun arresting internet users who used social media websites to incite violence against the police or citizens.