While three persons died of lightning in Lakhisarai district, two children perished in Muzaffarpur as a girl died in Nalanda district, officials said.
Due to inclement weather Chief Minister Nitish Kumar's programme in Raxual had to be rescheduled as he cancelled travel by air and left for the town on the Indo-Nepal border by road, the Chief Minister's Office said.
Director, State Meteorological Department A K Sen said the thunder squall was due to cyclonic circulation arising from Bay of Bengal formed near Jharkhand.