Iraq's parliament is set to convene again amid a deepening crisis roiling the house where dozens of legislators are holding a sit-in protest for the third consecutive day.

Thursday's session was scheduled after parliament speaker, Salim al-Jibouri, formally called for the chamber to be dissolved as scuffles broke out inside the parliament on Wednesday.

Lawmakers staging the sit-in, both Sunni and Shiite, have demanded Prime Minister Haider al-Abadi and the country's entire leadership resign.

Earlier this week, parliament delayed a vote on new Cabinet ministers proposed by al-Abadi in an attempt to push through reforms, nearly nine months after he first proposed austerity measures that he claimed would also tackle corruption.

Sunni lawmaker Raad al-Dahlaki says if the parliament is dissolved, which he doubts, the move would force new elections.