Kathmandu, Mar 30 : At least two persons were killed and two others injured in a bomb explosion inside a mosque in Nepal last evening.

According to eyewitnesses, two persons on motorcycle hurled the bomb inside the mosque in Sarauchiya, Biratnagar, where over 60 people were offering prayers.

Injured have been admitted in hospital.

The administration has clamped indefinite curfew in and around the area since 9 pm on Saturday, nepalnews. com reported.

A group called National Defense Army has claimed the responsibility for the explosion.

Nepalese Prime Minister Girija Prasad Koirala is in Biratnagar since Friday. (ANI)