Prime Minister Narendra Modi will fast on Thursday against the washout of the second edition of the budget session of Parliament that ended on April 6 due to protests by opposition parties."The Prime Minister will observe a fast even while engaged in his official duty and official engagements," BJP spokesperson G.V.L. Narsimha Rao told IANS.This will be part of the Bharatiya Janata Party's day-long hunger strike that day to protest against the disruption of Parliament by the opposition.BJP President Amit Shah will observe a hunger strike at Hubli in Karnataka while party MPs will fast in their constituencies.