Five persons were killed due tolightning and rain in Bihars Gopalganj, Siwan and Nalanda districts on Sunday, officials said.Two persons each died in Gopalganj and Siwan while one died in Nalanda district due to lightning, the official said.Bihar Chief Minister Nitish Kumar on Sunday expressed grief over the death of five people due to lightning and rain, an official release said.Kumar announced a payment of Rs 4 lakh to each of the victim's families as ex-gratia.