Anti-government protesters returned to the streets, following a winter break
Pashinyan has rejected calls to step down.
On Thursday, he called on his followers to rally in central Yerevan to support him and took to Facebook to address the nation in a livestream.
Protesters braved freezing weather as they attended a rally demanding their government resign
He also fired the head of the general staff of the armed forces, the Interfax news agency reported.
Police stood guard outside government buildings during the anti-government rally
It was unclear whether the army was willing to use force to back its statement or whether its call was for him to step down was just verbal.
Ethnic Armenian troops ceded swathes of territory in and around the Nagorno-Karabakh enclave to Azerbaijan in a conflict last year that claimed thousands of lives.