Devotees light lamps on the 399th birth anniversary of the ninth Guru, Teg Bahadur, at the Golden Temple in Amritsar AFP/NARINDER NANU

NEW DELHI: Key industries are warning of social unrest unless India's Prime Minister Narendra Modi makes concessions when he announces any extension Tuesday (Apr 13) to a three-week pandemic-lockdown for the country's 1.3 billion people.