The deceased are Narayan Khadka, 50, and Som Bahadur Tamang, 16, of Dhorthali-4, according to District Police Office.
The injured are being treated at Sadabahar Hospital in Khadichaur.
Two Nepal Army soldiers electrocuted to death in Chitwan
Speaking at a meeting with party leaders on Saturday, Dr Koirala said that as his faction remains in opposition, it will seek justice through the courts rather than resorting to street protests.