On the morning of 10 November 2020, protesters seized the parliament building and pulled Mirzoyan from a car, demanding to know the whereabouts of Prime Minister Nikol Pashinyan, who announced a peace treaty with Azerbaijan just hours earlier to end the Nagorno-Karabakh War. In the presence of his child, Mirzoyan was beaten by a mob and was later taken to hospital, where he underwent surgery and was said to be in a good condition.