The group has claimed responsibility for a spate of shooting attacks against Israeli soldiers and civilians in the Nablus area over the past few weeks.
The closure was placed on Nablus after a number of terror attacks was claimed by the Lions' Den militant group.
Last week, four Lions’ Den gunmen surrendered to the Palestinian security forces in a move that is seen as a first step toward dismantlement.
The Boston Mapping Project has published a statement in solidarity with the Nablus-based terror movement.
The IDF operations send an important message of deterrence: Terrorists hiding in “safe houses” are not safe.
Protest leaders identified themselves as being affiliated with the Hadash party.
Israeli measures have severely disrupted economic activities in the Nablus area, increasing the pressure not only on the gunmen, but also on many residents whose livelihoods have been badly affected.
Palestinian media reported that the organization turned to Palestinian security forces with a request to protect Mahmoud Albana, a top commander within the group.
One of the members of the group that was arrested was identified by the IDF as Muhammed Nabulsi, brother of one of the group’s founding members Ibrahim al-Nabulsi.
Dramatic night vision helmet footage of the raid on the headquarters of the Lions' Den terrorist organization.