Acting on a tip-off, police checked a passenger bus and arrested the two Indians, this morning.
The two were nabbed at Khanikhola, along the Prithvi Highway, in Dhading district.
Officials at the Khanikhola police station said over the phone that a two-litre pressure cooker fitted with wires and two socket bombs were recovered from the bus, the Himalayan Times reported.
Police suspect that the devices were being brought to Kathmandu to create terror and havoc among voters and candidates.
With the second phase of parliamentary and provincial elections slated for December 7 in 45 districts across the nation, attacks on candidates have increased.