The attack took place during evening prayers Saturday in Biratnagar, about 400 km (250 miles) southeast of Kathmandu.
"Two bombs were hurled at a roadside mosque, of which one exploded and the other didn't," Yogendra Katuwal, a senior police official, said. A curfew has been imposed on the area as a precautionary measure.
Both the dead and wounded were Muslims, who make up about 4 percent of the predominantly Hindu nation's 26 million people.
A group calling itself Nepal Defence Army claimed responsibility for the blasts.
Nepal was declared a secular nation in 2006 after weeks of street protests forced Hindu King Gyanendra to give up direct rule. Saturday's bombing comes as Nepal prepares for an April 10 election, after which the monarchy will be abolished and Nepal will be declared a secular republic.
Last Mod: 30 Mart 2008, 16:52