A bag of pellets connected to a firework was thrown at the group of protesters. Nobody was injured in the incident and it is not known who threw the firework.
Dozens of protesters are refusing to vacate a property on North Frederick St in Dublin city centre despite a High Court injunction ordering them to leave by 2pm today.
Protesters have been shouting chants of "Murphy, Murphy, Murphy, out, out, out" and are wearing masks of Taoiseach Leo Varadkar and Housing Minister Eoghan Murphy.
A small number of gardaí are at the scene, but neither the landlord or security personnel have yet shown up, despite the 2pm deadline passing.