By Mubasher BukhariLAHORE (Reuters) - Heavy pollution-fuelled smog forced authorities to close schools and markets this week in Pakistan's most populous province, including the eastern city of Lahore which has risen to one of the world's worst cities for hazardous air quality. Schools, offices, restaurants and businesses, aside from priority services like pharmacies, hospitals and courts, would all close to limit residents' movement outside, according to a directive from the provincial government. Heavy smog blanketed Lahore this week, reducing visibility and leading residents to complain of a threat to their health. In neighbouring India, authorities in Delhi have announced they would restrict use of vehicles next week to curb rising pollution as air quality in the capital remained dangerously unsafe despite mitigation efforts. (Reporting by Mubasher Bukhari in Lahore; Writing by Charlotte Greenfield; Editing by Michael Perry)

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Persons: Mubasher Bukhari, Amir Mir, Mohammad Salahuddin, Charlotte Greenfield, Michael Perry Organizations: Schools Locations: Mubasher, Mubasher Bukhari LAHORE, Pakistan's, Lahore, Punjab, Swiss, Delhi, Karachi, South Asia, India