26-year-old Gita Kunwar hailing from Dhurkot-Jaisithok Ratpokhara-2 gave birth to two sons and two daughters.
Health condition of mother and newborns is normal, according to the hospital.
Birgunj woman gives birth to quadruplets
The move follows a decision taken during an emergency secretariat meeting of the party on Saturday. UML has been staging protests across the country demanding the immediate release of Chairman KP Oli.