Members of the Islamic Movement of Nigeria (IMN), on Thursday, stormed the Eagle Square, Abuja throwing the area into confusion with fear-stricken workers scampering in various directions.
The situation obstructed traffic flow with motorists forced to either stand still or run into each other.
The Shiite protesters blocked all major routes leading into the National Assembly, with the confusion getting even worse when securitymen threw tear gas canisters in a bid to disperse the protesters.
They had on Monday stormed the National Assembly, demanding the release of their leader, el Zakzaky, with some of them scaling its fence to force their ways in.
Reports had indicated that the protesters disarmed some Police personnel stationed at the gate of the complex, injuring some of them in the process.
A Police source confirmed that 40 members of the group were arrested after the Monday clash with security personnel, with some of them set to be arraigned.